{"id":1630,"date":"2025-10-30T11:37:39","date_gmt":"2025-10-30T08:37:39","guid":{"rendered":"https:\/\/wiki.voka.io\/?post_type=glossary_item&#038;p=1630"},"modified":"2025-10-30T11:37:46","modified_gmt":"2025-10-30T08:37:46","slug":"tumor-glomico","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/pt\/glossario\/tumor-glomico\/","title":{"rendered":"Tumor gl\u00f4mico"},"content":{"rendered":"\n<p>O tumor gl\u00f4mico, ou paraganglioma, \u00e9 um tumor raro, geralmente benigno, que se desenvolve a partir das c\u00e9lulas dos parag\u00e2nglios (quimiorreceptores). Essas c\u00e9lulas respondem normalmente \u00e0s altera\u00e7\u00f5es da composi\u00e7\u00e3o qu\u00edmica do sangue e est\u00e3o localizadas ao longo dos principais vasos e nervos.<\/p>\n\n<p>Apesar da sua natureza benigna, estes tumores podem ser perigosos devido \u00e0 sua localiza\u00e7\u00e3o pr\u00f3xima de estruturas vitais (vasos sangu\u00edneos, nervos cranianos) e ao seu abundante suprimento sangu\u00edneo. O tumor cresce lentamente, mas pode causar compress\u00e3o e destrui\u00e7\u00e3o dos tecidos circundantes.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x44D;&#x442;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;-&#x438;-&#x43F;&#x430;&#x442;&#x43E;&#x444;&#x438;&#x437;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;\"><strong>Etiologia e fisiopatologia<\/strong><\/h2>\n\n<p>Os paragangliomas desenvolvem-se a partir de c\u00e9lulas neuroend\u00f3crinas, que fazem parte do sistema nervoso aut\u00f3nomo. Uma parte significativa dos casos (at\u00e9 30-40%) est\u00e1 associada a muta\u00e7\u00f5es gen\u00e9ticas heredit\u00e1rias, mais frequentemente nos genes da succinato desidrogenase (SDH).<\/p>\n\n<p>A maioria dos tumores gl\u00f4micos da cabe\u00e7a e pesco\u00e7o s\u00e3o hormonalmente inativos. No entanto, os paragangliomas localizados na cavidade abdominal podem produzir catecolaminas (adrenalina, noradrenalina) e causar sintomas semelhantes aos do feocromocitoma.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\"><strong>Import\u00e2ncia cl\u00ednica<\/strong><\/h2>\n\n<p>As manifesta\u00e7\u00f5es cl\u00ednicas dependem da localiza\u00e7\u00e3o do tumor.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Glomus timp\u00e2nico (no ouvido m\u00e9dio).<\/strong>  Provoca um zumbido no ouvido que pulsa como o cora\u00e7\u00e3o, e tamb\u00e9m uma perda de audi\u00e7\u00e3o condutiva.<\/li>\n\n\n\n<li><strong>Glomus jugular (na base do cr\u00e2nio).<\/strong>  Leva \u00e0 les\u00e3o dos nervos cranianos, provocando rouquid\u00e3o, dificuldade em engolir e fraqueza dos m\u00fasculos do ombro.<\/li>\n\n\n\n<li><strong>Tumor do glomus carot\u00eddeo.<\/strong>  Manifesta-se na forma de uma neoplasia indolor de crescimento lento no pesco\u00e7o, na regi\u00e3o da bifurca\u00e7\u00e3o da art\u00e9ria car\u00f3tida.<\/li>\n<\/ul>\n\n<p>O diagn\u00f3stico baseia-se na tomografia computorizada e na resson\u00e2ncia magn\u00e9tica com contraste, que revelam uma massa altamente vascularizada. O tratamento \u00e9 complexo e pode incluir remo\u00e7\u00e3o cir\u00fargica (geralmente com emboliza\u00e7\u00e3o pr\u00e9-operat\u00f3ria para reduzir a perda de sangue), radioterapia ou observa\u00e7\u00e3o.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O tumor gl\u00f4mico, ou paraganglioma, \u00e9 um tumor raro, geralmente benigno, que se desenvolve a partir das c\u00e9lulas dos parag\u00e2nglios (quimiorreceptores). Essas c\u00e9lulas respondem normalmente \u00e0s altera\u00e7\u00f5es da composi\u00e7\u00e3o qu\u00edmica do sangue e est\u00e3o localizadas ao longo dos principais vasos e nervos.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-1630","glossary_item","type-glossary_item","status-publish","hentry"],"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>Tumor gl\u00f4mico: defini\u00e7\u00e3o m\u00e9dica e vis\u00e3o geral | Voka Wiki<\/title>\n<meta name=\"description\" content=\"O tumor gl\u00f4mico, ou paraganglioma, \u00e9 um tumor raro, geralmente benigno, que se desenvolve a partir das c\u00e9lulas dos parag\u00e2nglios (quimiorreceptores). 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