{"id":2149,"date":"2025-12-11T15:05:44","date_gmt":"2025-12-11T12:05:44","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/diseases\/uncategorized\/bocio\/"},"modified":"2026-04-08T12:13:00","modified_gmt":"2026-04-08T09:13:00","slug":"bocio","status":"publish","type":"diseases_post","link":"https:\/\/wiki.dev.voka.io\/pt\/doencas\/endocrinologia\/bocio\/","title":{"rendered":"B\u00f3cio: classifica\u00e7\u00e3o, etiologia e m\u00e9todos de tratamento"},"content":{"rendered":"<p><?xml encoding=\"UTF-8\" ?><\/p>\n<p>B\u00f3cio \u00e9 um termo geral usado para descrever anomalias da gl\u00e2ndula tire\u00f3ide, manifestadas por um aumento em seu tamanho e volume. O volume da gl\u00e2ndula tire\u00f3ide normalmente n\u00e3o excede 18 cm\u00b3 nas mulheres e 25 cm\u00b3 nos homens. O b\u00f3cio \u00e9 4 a 5 vezes mais comum em mulheres do que em homens.<\/p>\n<p>O b\u00f3cio pode ser fisiol\u00f3gico (na puberdade, gravidez e lacta\u00e7\u00e3o) ou patol\u00f3gico. O aumento fisiol\u00f3gico da gl\u00e2ndula tireoide \u00e9 devido a um aumento na necessidade do corpo por horm\u00f4nios tireoidianos, \u00e9 tempor\u00e1rio e, como regra geral, n\u00e3o requer tratamento.<\/p>\n<p><a href=\"https:\/\/catalog.voka.io\/en\/models\/862dbbd9-7cc2-476f-9800-793443a3b8a7\/8bbb5608-42e1-4f30-b99c-22a516d26552\/f3507060-bd72-46ce-8028-dc289507f591\/e3d94317-67b0-4808-a3b3-367a078ee5b6\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Modelos 3D<\/a> dos diferentes tipos de b\u00f3cio:<\/p>\n<div class=\"carousel-block\">\n<div class=\"swiper carousel-swiper carousel-swiper-block_69ef84fd9bac1\">\n<div class=\"swiper-wrapper\">\n<div class=\"swiper-slide image-carousel-slide\"><img decoding=\"async\" class=\"carousel-image\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/endocrinology\/goiter\/diffuse-goiter.webp\" alt=\"B\u00f3cio difuso \"><span class=\"small-text-article text-main-text-color\">B\u00f3cio difuso <\/span><\/div>\n<div class=\"swiper-slide image-carousel-slide\"><img decoding=\"async\" class=\"carousel-image\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/endocrinology\/goiter\/nodular-goiter.webp\" alt=\"B\u00f3cio nodular\"><span class=\"small-text-article text-main-text-color\">B\u00f3cio nodular<\/span><\/div>\n<div class=\"swiper-slide image-carousel-slide\"><img decoding=\"async\" class=\"carousel-image\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/endocrinology\/goiter\/nodular-goiter-section.webp\" alt=\"B\u00f3cio nodular (vista seccional)\"><span class=\"small-text-article text-main-text-color\">B\u00f3cio nodular (vista seccional)<\/span><\/div>\n<div class=\"swiper-slide image-carousel-slide\"><img decoding=\"async\" class=\"carousel-image\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/endocrinology\/goiter\/multinodular-goiter.webp\" alt=\"B\u00f3cio multinodular\"><span class=\"small-text-article text-main-text-color\">B\u00f3cio multinodular<\/span><\/div>\n<div class=\"swiper-slide image-carousel-slide\"><img decoding=\"async\" class=\"carousel-image\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/endocrinology\/goiter\/multinodular-goiter-section.webp\" alt=\"B\u00f3cio multinodular (vista seccional)\"><span class=\"small-text-article text-main-text-color\">B\u00f3cio multinodular (vista seccional)<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"swiper-article-carousel__controls\">\n<div class=\"swiper-article-carousel__pagination-container swiper-article-carousel__pagination-container-block_69ef84fd9bac1\"><\/div>\n<div class=\"swiper-article-carousel__arrows\"><button class=\"swiper__arrow swiper__arrow--prev carousel-swiper-button-prev swiper__arrow swiper__arrow--prev carousel-swiper-button-prev-block_69ef84fd9bac1\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewbox=\"0 0 40 40\" fill=\"none\"><path d=\"M20 3.75C16.7861 3.75 13.6443 4.70305 10.972 6.48862C8.29969 8.27419 6.21689 10.8121 4.98696 13.7814C3.75704 16.7507 3.43524 20.018 4.06225 23.1702C4.68926 26.3224 6.23692 29.2179 8.50952 31.4905C10.7821 33.7631 13.6776 35.3107 16.8298 35.9378C19.982 36.5648 23.2493 36.243 26.2186 35.013C29.1879 33.7831 31.7258 31.7003 33.5114 29.028C35.297 26.3557 36.25 23.2139 36.25 20C36.2455 15.6916 34.5319 11.561 31.4855 8.51454C28.439 5.46806 24.3084 3.75455 20 3.75ZM23.3844 25.3656C23.5005 25.4818 23.5926 25.6196 23.6555 25.7714C23.7184 25.9231 23.7507 26.0858 23.7507 26.25C23.7507 26.4142 23.7184 26.5769 23.6555 26.7286C23.5926 26.8804 23.5005 27.0182 23.3844 27.1344C23.2682 27.2505 23.1304 27.3426 22.9786 27.4055C22.8269 27.4683 22.6643 27.5007 22.5 27.5007C22.3358 27.5007 22.1731 27.4683 22.0214 27.4055C21.8696 27.3426 21.7318 27.2505 21.6156 27.1344L15.3656 20.8844C15.2494 20.7683 15.1572 20.6304 15.0943 20.4787C15.0314 20.3269 14.999 20.1643 14.999 20C14.999 19.8357 15.0314 19.6731 15.0943 19.5213C15.1572 19.3696 15.2494 19.2317 15.3656 19.1156L21.6156 12.8656C21.7318 12.7495 21.8696 12.6574 22.0214 12.5945C22.1731 12.5317 22.3358 12.4993 22.5 12.4993C22.6643 12.4993 22.8269 12.5317 22.9786 12.5945C23.1304 12.6574 23.2682 12.7495 23.3844 12.8656C23.5005 12.9818 23.5926 13.1196 23.6555 13.2714C23.7184 13.4231 23.7507 13.5858 23.7507 13.75C23.7507 13.9142 23.7184 14.0769 23.6555 14.2286C23.5926 14.3804 23.5005 14.5182 23.3844 14.6344L18.0172 20L23.3844 25.3656Z\" fill=\"#B5C0CD\"><\/path><\/svg><\/button><button class=\"swiper__arrow swiper__arrow--next carousel-swiper-button-next swiper__arrow swiper__arrow--next carousel-swiper-button-next-block_69ef84fd9bac1\" tabindex=\"0\" aria-label=\"Next slide\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewbox=\"0 0 40 40\" fill=\"none\"><path d=\"M20 3.75C16.7861 3.75 13.6443 4.70305 10.972 6.48862C8.29969 8.27419 6.21689 10.8121 4.98696 13.7814C3.75704 16.7507 3.43524 20.018 4.06225 23.1702C4.68926 26.3224 6.23692 29.2179 8.50952 31.4905C10.7821 33.7631 13.6776 35.3107 16.8298 35.9378C19.982 36.5648 23.2493 36.243 26.2186 35.013C29.1879 33.7831 31.7258 31.7003 33.5114 29.028C35.297 26.3557 36.25 23.2139 36.25 20C36.2455 15.6916 34.5319 11.561 31.4855 8.51454C28.439 5.46806 24.3084 3.75455 20 3.75ZM23.3844 25.3656C23.5005 25.4818 23.5926 25.6196 23.6555 25.7714C23.7184 25.9231 23.7507 26.0858 23.7507 26.25C23.7507 26.4142 23.7184 26.5769 23.6555 26.7286C23.5926 26.8804 23.5005 27.0182 23.3844 27.1344C23.2682 27.2505 23.1304 27.3426 22.9786 27.4055C22.8269 27.4683 22.6643 27.5007 22.5 27.5007C22.3358 27.5007 22.1731 27.4683 22.0214 27.4055C21.8696 27.3426 21.7318 27.2505 21.6156 27.1344L15.3656 20.8844C15.2494 20.7683 15.1572 20.6304 15.0943 20.4787C15.0314 20.3269 14.999 20.1643 14.999 20C14.999 19.8357 15.0314 19.6731 15.0943 19.5213C15.1572 19.3696 15.2494 19.2317 15.3656 19.1156L21.6156 12.8656C21.7318 12.7495 21.8696 12.6574 22.0214 12.5945C22.1731 12.5317 22.3358 12.4993 22.5 12.4993C22.6643 12.4993 22.8269 12.5317 22.9786 12.5945C23.1304 12.6574 23.2682 12.7495 23.3844 12.8656C23.5005 12.9818 23.5926 13.1196 23.6555 13.2714C23.7184 13.4231 23.7507 13.5858 23.7507 13.75C23.7507 13.9142 23.7184 14.0769 23.6555 14.2286C23.5926 14.3804 23.5005 14.5182 23.3844 14.6344L18.0172 20L23.3844 25.3656Z\" fill=\"#B5C0CD\"><\/path><\/svg><\/button><\/div>\n<\/div>\n<\/div>\n<p><script defer>\n    document.addEventListener('DOMContentLoaded', function() {\n        const imagesCarouselSwiper = new Swiper('.carousel-swiper-block_69ef84fd9bac1', {\n            slidesPerView: 1,\n            spaceBetween: 20,\n            loop: true,\n            pagination: {\n                el: '.swiper-article-carousel__pagination-container-block_69ef84fd9bac1',\n                clickable: true,\n            },\n            navigation: {\n                nextEl: '.carousel-swiper-button-next-block_69ef84fd9bac1',\n                prevEl: '.carousel-swiper-button-prev-block_69ef84fd9bac1',\n            },\n        })\n    })\n<\/script><\/p>\n<h2 class=\"wp-block-heading\" id=\"classificacao-do-bocio\"><strong>Classifica\u00e7\u00e3o do b\u00f3cio<\/strong><\/h2>\n<p>Existem v\u00e1rias classifica\u00e7\u00f5es de b\u00f3cio, dependendo da etiologia, epidemiologia, anatomia, bem como das caracter\u00edsticas funcionais ou morfol\u00f3gicas.<\/p>\n<h3 class=\"wp-block-heading\" id=\"por-etiologia-e-epidemiologia\"><strong>Por etiologia e epidemiologia <\/strong><\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>O aumento fisiol\u00f3gico<\/strong> \u00e9 devido ao aumento da necessidade do corpo por horm\u00f4nios tireoidianos (puberdade, gravidez, lacta\u00e7\u00e3o).<\/li>\n<li><strong>O b\u00f3cio patol\u00f3gico<\/strong> ocorre como consequ\u00eancia de uma doen\u00e7a da tireoide.<\/li>\n<li><strong>O b\u00f3cio end\u00eamico,<\/strong> revelado em uma grande popula\u00e7\u00e3o, \u00e9 causado pela defici\u00eancia de iodo.<\/li>\n<li><strong>O b\u00f3cio espor\u00e1dico <\/strong>ocorre em regi\u00f5es n\u00e3o end\u00eamicas.<\/li>\n<li><strong>O b\u00f3cio familiar (heredit\u00e1rio) \u00e9 <\/strong>causado pela presen\u00e7a de um defeito gen\u00e9tico na s\u00edntese do horm\u00f4nio tireoidiano.<\/li>\n<\/ul>\n<h3 class=\"wp-block-heading\" id=\"por-estrutura-e-funcao\"><strong>Por estrutura e fun\u00e7\u00e3o<\/strong><\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>Estrutura morfol\u00f3gica:<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>B\u00f3cio difuso:<\/strong> a gl\u00e2ndula tireoide est\u00e1 uniformemente aumentada.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<figure class=\"wp-block-video\" id=\"animacao-3d-bocio-difuso\"><video controls><source data-src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/endocrinology\/goiter\/diffuse-goiter.webm\" type=\"video\/webm\"><\/source><\/video><figcaption class=\"wp-element-caption\">Anima\u00e7\u00e3o 3D: b\u00f3cio difuso<\/figcaption><\/figure>\n<ul class=\"wp-block-list\">\n<li><strong>B\u00f3cio nodular:<\/strong> o aumento \u00e9 devido a uma massa nodular solit\u00e1ria.<\/li>\n<\/ul>\n<figure class=\"wp-block-video\" id=\"animacao-3d-bocio-nodular\"><video controls><source data-src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/endocrinology\/goiter\/nodular-goiter.webm\" type=\"video\/webm\"><\/source><\/video><figcaption class=\"wp-element-caption\">Anima\u00e7\u00e3o 3D: b\u00f3cio nodular<\/figcaption><\/figure>\n<ul class=\"wp-block-list\">\n<li><strong>B\u00f3cio multinodular significa <\/strong>a presen\u00e7a de m\u00faltiplos (2 ou mais) n\u00f3dulos.<\/li>\n<\/ul>\n<figure class=\"wp-block-video\" id=\"animacao-3d-bocio-multinodular\"><video controls><source data-src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/endocrinology\/goiter\/multinodular-goiter.webm\" type=\"video\/webm\"><\/source><\/video><figcaption class=\"wp-element-caption\">Anima\u00e7\u00e3o 3D: b\u00f3cio multinodular<\/figcaption><\/figure>\n<ul class=\"wp-block-list\">\n<li><strong>Fun\u00e7\u00e3o:<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>B\u00f3cio n\u00e3o t\u00f3xico (b\u00f3cio eutire\u00f3ideo):<\/strong> a fun\u00e7\u00e3o \u00e9 normal (eutireoidismo) ou reduzida (hipotireoidismo).<\/li>\n<li><strong>B\u00f3cio t\u00f3xico:<\/strong> os n\u00edveis de horm\u00f4nio tireoidiano est\u00e3o elevados.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Anatomia:<\/strong><strong>b\u00f3cio simples<\/strong> (no pesco\u00e7o) ou <strong>b\u00f3cio retroesternal<\/strong> (localizado abaixo da incisura jugular).<\/li>\n<\/ul>\n<h3 class=\"wp-block-heading\" id=\"por-estagio-graus-de-aumento\"><strong>Por est\u00e1gio (graus de aumento) <\/strong><\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>Est\u00e1gio 0:<\/strong> a gl\u00e2ndula tireoide n\u00e3o est\u00e1 aumentada (sem b\u00f3cio).<\/li>\n<li><strong>Est\u00e1gio I:<\/strong> a gl\u00e2ndula tireoide est\u00e1 aumentada \u00e0 palpa\u00e7\u00e3o, o contorno do pesco\u00e7o n\u00e3o est\u00e1 deformado e a posi\u00e7\u00e3o do pesco\u00e7o \u00e9 normal.<\/li>\n<li><strong>Est\u00e1gio II:<\/strong> o aumento da gl\u00e2ndula tireoide \u00e9 detectado tanto pela palpa\u00e7\u00e3o quanto visualmente (deforma\u00e7\u00e3o do contorno do pesco\u00e7o em rela\u00e7\u00e3o \u00e0 sua posi\u00e7\u00e3o normal).<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"etiologia-e-patogenese-do-bocio\"><strong>Etiologia e patog\u00eanese do b\u00f3cio<\/strong><\/h2>\n<h3 class=\"wp-block-heading\" id=\"causas\"><strong>Causas<\/strong><\/h3>\n<p>A causa mais comum do b\u00f3cio \u00e9 a defici\u00eancia de iodo.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Defici\u00eancia de iodo:<\/strong> a redu\u00e7\u00e3o da ingest\u00e3o de iodo aumenta o risco de b\u00f3cio.<\/li>\n<li><strong>Doen\u00e7as da tireoide:<\/strong> o b\u00f3cio pode resultar de les\u00f5es autoimunes, inflamat\u00f3rias ou tumorais.<\/li>\n<li><strong>Anomalias gen\u00e9ticas:<\/strong> foram identificadas muta\u00e7\u00f5es nos genes NIS, tiroperoxidase, DUOX2 e outros.<\/li>\n<li><strong>Goitrog\u00eanicos:<\/strong> administra\u00e7\u00e3o de medicamentos (l\u00edtio, amiodarona) e alimentos (repolho, sorgo).<\/li>\n<li><strong>Outros fatores:<\/strong> exposi\u00e7\u00e3o \u00e0 radia\u00e7\u00e3o ionizante, resist\u00eancia \u00e0 insulina, s\u00edndrome metab\u00f3lica.<\/li>\n<\/ul>\n<h3 class=\"wp-block-heading\" id=\"patogenese\"><strong>Patog\u00eanese<\/strong><\/h3>\n<p><strong>O b\u00f3cio \u00e9 uma resposta adaptativa<\/strong> das c\u00e9lulas foliculares da gl\u00e2ndula tireoide a um processo que bloqueia a produ\u00e7\u00e3o do horm\u00f4nio tireoidiano.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Mecanismo:<\/strong> a defici\u00eancia de iodo leva \u00e0 diminui\u00e7\u00e3o da produ\u00e7\u00e3o hormonal. Em resposta, a gl\u00e2ndula pituit\u00e1ria aumenta a secre\u00e7\u00e3o de TSH.<\/li>\n<li><strong>Resultado:<\/strong> n\u00edveis elevados de TSH levam \u00e0 estimula\u00e7\u00e3o das c\u00e9lulas foliculares, hiperplasia tireoidiana e forma\u00e7\u00e3o de b\u00f3cio.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"apresentacao-clinica-e-sintomas-do-bocio\"><strong>Apresenta\u00e7\u00e3o cl\u00ednica e sintomas do b\u00f3cio<\/strong><\/h2>\n<p>A apresenta\u00e7\u00e3o cl\u00ednica do b\u00f3cio deve-se a duas s\u00edndromes: a s\u00edndrome de compress\u00e3o dos \u00f3rg\u00e3os e tecidos circundantes devido ao aumento do tamanho da gl\u00e2ndula e a s\u00edndrome de disfun\u00e7\u00e3o end\u00f3crina. A grande maioria dos pacientes \u00e9 eutire\u00f3idea e n\u00e3o apresenta queixas.<\/p>\n<h3 class=\"wp-block-heading\" id=\"sindrome-de-compressao\"><strong>S\u00edndrome de compress\u00e3o<\/strong><\/h3>\n<p>Inclui sintomas como febre persistente e sensa\u00e7\u00e3o de n\u00f3 na garganta, dificuldade em falar, disfagia, aumento da dispneia e deforma\u00e7\u00e3o do contorno do pesco\u00e7o. Como o volume da gl\u00e2ndula tireoide geralmente aumenta lentamente, esses sintomas se desenvolvem gradualmente e os pacientes n\u00e3o apresentam queixas por um longo per\u00edodo.<\/p>\n<h3 class=\"wp-block-heading\" id=\"sindrome-de-disfuncao-endocrina\"><strong>S\u00edndrome de disfun\u00e7\u00e3o end\u00f3crina <\/strong><\/h3>\n<p>As manifesta\u00e7\u00f5es cl\u00ednicas s\u00e3o causadas pelo desenvolvimento de hipotireoidismo ou hipertireoidismo. A grande maioria dos pacientes \u00e9 eutire\u00f3idea e n\u00e3o apresenta queixas.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Hipotireoidismo (b\u00f3cio n\u00e3o t\u00f3xico):<\/strong> fadiga r\u00e1pida, letargia, apatia, sonol\u00eancia, labilidade emocional, unhas e cabelos quebradi\u00e7os, pele seca, incha\u00e7o, aumento do peso corporal, diminui\u00e7\u00e3o da libido, menstrua\u00e7\u00e3o irregular nas mulheres.<\/li>\n<li><strong>Hipertireoidismo (b\u00f3cio t\u00f3xico):<\/strong> taquicardia, arritmias, perda de peso corporal com aumento do apetite, labilidade emocional, aumento da sudorese, tremores nas m\u00e3os.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"diagnostico-e-tratamento-do-bocio\"><strong>Diagn\u00f3stico e tratamento do b\u00f3cio<\/strong><\/h2>\n<h3 class=\"wp-block-heading\" id=\"metodos-de-diagnostico\"><strong>M\u00e9todos de diagn\u00f3stico<\/strong><\/h3>\n<ol class=\"wp-block-list\">\n<li><strong>Hist\u00f3rico m\u00e9dico <\/strong><\/li>\n<\/ol>\n<p>Os fatos de viver em \u00e1reas end\u00eamicas com defici\u00eancia de iodo, exposi\u00e7\u00e3o pr\u00e9via \u00e0 radia\u00e7\u00e3o ionizante, hist\u00f3rico heredit\u00e1rio e uso de medicamentos que afetam a fun\u00e7\u00e3o tireoidiana s\u00e3o importantes.<\/p>\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>Exame e palpa\u00e7\u00e3o <\/strong><\/li>\n<\/ol>\n<p>Permitem avaliar o tamanho da gl\u00e2ndula. Ao exame, os pacientes com b\u00f3cio em est\u00e1gio 2 apresentam um contorno cervical deformado com posi\u00e7\u00e3o normal do pesco\u00e7o, e a pele geralmente tem cor normal.<\/p>\n<p>\u00c0 palpa\u00e7\u00e3o, a gl\u00e2ndula tireoide apresenta aumento de tamanho, consist\u00eancia el\u00e1stica, \u00e9 indolor e m\u00f3vel em rela\u00e7\u00e3o aos tecidos circundantes.<\/p>\n<p>No caso de b\u00f3cio nodular\/multinodular, s\u00e3o detectadas massas \u00fanicas ou m\u00faltiplas, el\u00e1sticas, indolores e de formato arredondado \u00e0 palpa\u00e7\u00e3o no tecido tireoidiano.<\/p>\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>Diagn\u00f3stico laboratorial<\/strong><\/li>\n<\/ol>\n<p>Determina\u00e7\u00e3o dos n\u00edveis de horm\u00f4nios tireoidianos no soro (T3, T4, T3 livre, T4 livre, TSH, TG, TPOAb, TTHAb, TGAb).<\/p>\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>Ultrassom <\/strong><\/li>\n<\/ol>\n<p>\u00c9 o principal m\u00e9todo de imagem da tireoide. Permite avaliar a localiza\u00e7\u00e3o, o tamanho do \u00f3rg\u00e3o e a presen\u00e7a de patologia nodal. <\/p>\n<p>O Sistema de Relat\u00f3rios e Dados de Imagem da Tireoide (TI-RADS) \u00e9 atualmente utilizado para avaliar massas nodais.<\/p>\n<h4 class=\"wp-block-heading\" id=\"h-\u0443\u043b\u044c\u0442\u0440\u0430\u0437\u0432\u0443\u043a\u043e\u0432\u0430\u044f-\u043a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f-ti-rads-nbsp\"><strong>Classifica\u00e7\u00e3o por ultrassom (TI-RADS) <\/strong><\/h4>\n<figure class=\"wp-block-table table-to-cards\">\n<table class=\"has-fixed-layout\">\n<thead>\n<tr>\n<th class=\"has-text-align-center\" data-align=\"center\"><strong>TI-RADS<\/strong><\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"><strong>Risco de malignidade, %<\/strong><\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"><strong>Descri\u00e7\u00e3o<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"><strong>TI-RADS 1<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">0<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">Sem patologia nodal<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"><strong>TI-RADS 2<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">0<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">N\u00f3dulo coloidal dos tipos I, II, III<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"><strong>TI-RADS 3<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">< 5<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">N\u00f3dulos hiperec\u00f3icos, isoec\u00f3icos ou hipoec\u00f3icos com c\u00e1psula parcialmente formada (pseudon\u00f3dulos de Hashimoto)<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"><strong>TI-RADS 4a<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">5 \u2013 10<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">N\u00f3dulo s\u00f3lido ou misto hiperecoico, isoeico ou hipoecoico com c\u00e1psula fina, com ou sem calcifica\u00e7\u00f5es<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"><strong>TI-RADS 4b<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">10 \u2013 80<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">N\u00f3dulo hipo-, iso- ou hiperec\u00f3ico, com contorno irregular, sem borda clara com o par\u00eanquima normal, com presen\u00e7a de microcalcifica\u00e7\u00f5es<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"><strong>TI-RADS 5<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">> 80<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">N\u00f3dulo iso ou hipoecog\u00eanico, sem c\u00e1psula, com m\u00faltiplas calcifica\u00e7\u00f5es, com vasculariza\u00e7\u00e3o aumentada<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"><strong>TI-RADS 6<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">100<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\">N\u00f3dulo maligno previamente confirmado por resultados de bi\u00f3psia<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<ol start=\"5\" class=\"wp-block-list\">\n<li><strong>Visualiza\u00e7\u00e3o adicional<\/strong><\/li>\n<\/ol>\n<p>A tomografia computadorizada\/resson\u00e2ncia magn\u00e9tica e a cintilografia s\u00e3o utilizadas como m\u00e9todos de esclarecimento e diagn\u00f3stico funcional.<\/p>\n<ol start=\"6\" class=\"wp-block-list\">\n<li><strong>Bi\u00f3psia por aspira\u00e7\u00e3o com agulha fina (FNA)<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u00c9 utilizado para o diagn\u00f3stico diferencial de <strong>massas nodais<\/strong>.<\/li>\n<li>\u00c9 realizado sob controle de ultrassom. O procedimento n\u00e3o requer prepara\u00e7\u00e3o especial nem anestesia.<\/li>\n<li><strong>Complica\u00e7\u00f5es:<\/strong> hematoma subcut\u00e2neo, dor local, inflama\u00e7\u00e3o local. S\u00e3o raros, geralmente n\u00e3o requerem tratamento e desaparecem por si pr\u00f3prios em poucos dias.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3 class=\"wp-block-heading\" id=\"diagnostico-diferencial\"><strong>Diagn\u00f3stico diferencial<\/strong><\/h3>\n<p>\u00c9 realizada em casos de linfoma, c\u00e2ncer de tireoide, adenoma da paratireoide, cisto mediano do pesco\u00e7o, malforma\u00e7\u00f5es vasculares, abscesso e linfadenopatia. O diagn\u00f3stico \u00e9 feito com a ajuda de ultrassom, tomografia computadorizada, resson\u00e2ncia magn\u00e9tica e bi\u00f3psia por pun\u00e7\u00e3o aspirativa, seguida de exame citol\u00f3gico do material aspirado.<\/p>\n<div class=\"social-banner-block\">\n<div class=\"social-banner-content\">\n<p class=\"h5-title text-black\">Encontra mais conte\u00fados cientificamente exactos nas nossas redes sociais<\/p>\n<p><span class=\"social-banner-text text-grey\">Subscreve e n\u00e3o percas os recursos mais recentes<\/span><\/p>\n<div class=\"social-links-wrapper\"><a class=\"social-icon-link\" href=\"https:\/\/www.facebook.com\/VOKA3DAnatomyAndPathology\/\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/facebook.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.instagram.com\/voka.io\/\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/insta.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.linkedin.com\/company\/voka-io\/posts\/?feedView=all\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/linkedin.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.youtube.com\/@vokaio\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/youtube.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.pinterest.com\/voka3danatomyandpathology\/\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/pinterest.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.tiktok.com\/@voka.io\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/tiktok.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/discord.gg\/7ejUpq8DRR\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/discord.svg\" alt=\"social link\"><\/a><\/div>\n<\/div>\n<p><img decoding=\"async\" class=\"social-banner-image\" loading=\"lazy\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/social-media-banner-mobile-image.webp\" alt=\"Banner background\"><\/div>\n<h3 class=\"wp-block-heading\" id=\"tratamento-e-prognostico\"><strong>Tratamento e progn\u00f3stico<\/strong><\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>B\u00f3cio n\u00e3o t\u00f3xico (est\u00e1gio 1):<\/strong> em eutireoidismo e aus\u00eancia de queixas, n\u00e3o requer tratamento, mas est\u00e1 sujeito a observa\u00e7\u00e3o anual com ultrassom obrigat\u00f3rio e avalia\u00e7\u00e3o do estado da tireoide.<\/li>\n<li><strong>Hipotireoidismo:<\/strong> \u00e9 indicada terapia de reposi\u00e7\u00e3o hormonal com levotiroxina s\u00f3dica. A dose \u00e9 selecionada individualmente e ajustada sob o controle dos n\u00edveis de TSH e T4 livre.<\/li>\n<li><strong>B\u00f3cio em est\u00e1gio 2 \/ s\u00edndrome de compress\u00e3o:<\/strong> geralmente requerem tratamento cir\u00fargico.<\/li>\n<li><strong>Tratamento cir\u00fargico:<\/strong> indicado para b\u00f3cio nodular e multinodular (hemitiroidectomia ou tireoidectomia).<\/li>\n<li><strong>Complica\u00e7\u00f5es cir\u00fargicas:<\/strong> sangramento, infec\u00e7\u00e3o, danos no nervo lar\u00edngeo (disfonia, estenose), danos na gl\u00e2ndula paratire\u00f3ide (hipoparatireoidismo).<\/li>\n<li><strong>Progn\u00f3stico:<\/strong> o progn\u00f3stico em pacientes com formas difusas e nodulares de b\u00f3cio \u00e9 favor\u00e1vel.<\/li>\n<\/ul>\n<div>\n<h2 class=\"faq-title h2-article\" id=\"faq\">FAQ<\/h2>\n<div class=\"faq-section\">\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">1. O que \u00e9 b\u00f3cio em palavras simples?<\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">O b\u00f3cio \u00e9 um aumento do volume da tireoide acima do tamanho normal (mais de 18 cm\u00b3 nas mulheres e 25 cm\u00b3 nos homens).<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">2. O b\u00f3cio col\u00f3ide pode evoluir para c\u00e2ncer?<\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">O b\u00f3cio col\u00f3ide \u00e9 considerado um processo benigno. O risco de desenvolver c\u00e2ncer de tireoide em pacientes com b\u00f3cio col\u00f3ide \u00e9 inferior a 5%. <\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">3. Quais s\u00e3o os riscos da doen\u00e7a de Graves (DG)?<\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">A doen\u00e7a de Graves (DG) \u00e9 perigosa para o desenvolvimento de hipertireoidismo, que pode levar a complica\u00e7\u00f5es graves, incluindo dist\u00farbios do ritmo card\u00edaco, insufici\u00eancia card\u00edaca e crise tireoidiana (tempestade tireoidiana).<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">4. Como tratar o b\u00f3cio em mulheres se os n\u00edveis hormonais estiverem normais (eutireoidismo)?<\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">O b\u00f3cio eutire\u00f3ideo em est\u00e1gio 1 sem sintomas n\u00e3o requer tratamento, mas deve ser monitorado. Se o b\u00f3cio for nodular ou causar s\u00edndrome de compress\u00e3o, pode ser necess\u00e1rio tratamento cir\u00fargico.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">5. O que \u00e9 b\u00f3cio nodular em est\u00e1gio 1 e o que significa TI-RADS?<\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">O b\u00f3cio nodular em est\u00e1gio 1 significa que o paciente tem uma massa nodular com um pequeno grau de aumento da gl\u00e2ndula tireoide. De acordo com o TI-RADS, os n\u00f3dulos podem ser classificados como de baixo ou alto risco de malignidade.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">6. Por que o b\u00f3cio \u00e9 mais comum em mulheres?<\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">O b\u00f3cio \u00e9 4 a 5 vezes mais comum em mulheres do que em homens, o que se deve a fatores hormonais (gravidez, lacta\u00e7\u00e3o), bem como a uma maior preval\u00eancia de doen\u00e7as autoimunes da tireoide na popula\u00e7\u00e3o feminina.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sources-list-block sources-list-hidden\" id=\"referencias\">\n<div class=\"sources-list-content\">\n<div class=\"sources-list-title\">\n<p class=\"small-text-bold text-black sources-list-title-text\">Refer\u00eancias<\/p>\n<div class=\"sources-expand-button-wrapper-mobile\">\n<div class=\"sources-expand-button\"><svg width=\"32\" height=\"32\" viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 12L16 20L24 12\" stroke=\"#8C9AAB\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/svg><\/div>\n<\/div>\n<\/div>\n<div class=\"sources-list-items\">\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">1.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>VOKA 3D Anatomy & Pathology \u2013 Complete Anatomy and Pathology 3D Atlas (VOKA 3D Anatomia e Patologia \u2013 Atlas 3D completo de anatomia e patologia) [Internet]. VOKA 3D Anatomy & Pathology [VOKA 3D Anatomia & Patologia]. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: https:\/\/catalog.voka.io\/<\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">2.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Can AS, Rehman A. Goiter [Internet]. StatPearls \u2013 NCBI Bookshelf. 2023. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK562161\/<\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">3.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Organiza\u00e7\u00e3o Mundial de Sa\u00fade. Goitre as a determinant of the prevalence and severity of iodine deficiency disorders in populations. [Internet]. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: https:\/\/iris.who.int\/server\/api\/core\/bitstreams\/93690705-d99e-4818-bb83-ac69a1679575\/content<\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">4.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Organiza\u00e7\u00e3o Mundial de Sa\u00fade. People in the WHO European Region at greater risk of iodine deficiency due to changing diets. [Internet]. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: https:\/\/www.who.int\/europe\/news\/item\/28-06-2024-people-in-the-who-european-region-at-greater-risk-of-iodine-deficiency-due-to-changing-diets<\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">5.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Novosad SV, Rogova MO, Martirosyan NS, Petunina NA. Modern prognostic models for thyroid cancer risk stratification. Doctor.Ru. 2016;8(125):52-56. [Em russo.] <\/cite><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sources-expand-button-wrapper\">\n<div class=\"sources-expand-button\"><svg width=\"32\" height=\"32\" viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 12L16 20L24 12\" stroke=\"#8C9AAB\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/svg><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>B\u00f3cio \u00e9 um termo geral usado para descrever anomalias da gl\u00e2ndula tire\u00f3ide, manifestadas por um aumento em seu tamanho e volume. O volume da gl\u00e2ndula tire\u00f3ide normalmente n\u00e3o excede 18 cm\u00b3 nas mulheres e 25 cm\u00b3 nos homens. O b\u00f3cio \u00e9 4 a 5 vezes mais comum em mulheres do que em homens. O b\u00f3cio [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"template":"","diseases_category":[321],"class_list":["post-2149","diseases_post","type-diseases_post","status-publish","hentry","diseases_category-endocrinologia"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>B\u00f3cio: causas, classifica\u00e7\u00e3o e tratamento<\/title>\n<meta name=\"description\" content=\"Um guia completo sobre o b\u00f3cio: classifica\u00e7\u00e3o (nodular, difuso), sintomas, causas e tratamentos atuais para o b\u00f3cio.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00f3cio: classifica\u00e7\u00e3o, etiologia e m\u00e9todos de 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