{"id":12788,"date":"2025-07-31T10:47:38","date_gmt":"2025-07-31T14:47:38","guid":{"rendered":"https:\/\/www.rigicon.com\/glossary-term\/intravesical-therapy\/"},"modified":"2026-10-06T12:50:55","modified_gmt":"2026-10-06T16:50:55","slug":"terapia-intravesical-pt-br","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/terapia-intravesical-pt-br\/","title":{"rendered":"Terapia Intravesical"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[126],"glossary-product":[],"class_list":["post-12788","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-urological-conditions"],"acf":{"gt-definition":"A terapia intravesical \u00e9 uma abordagem terap\u00eautica especializada na qual o medicamento \u00e9 administrado diretamente na bexiga por meio de um cateter inserido pela uretra, em vez de ser administrado sistemicamente por via oral ou intravenosa.<sup>1<\/sup> Esse m\u00e9todo de administra\u00e7\u00e3o localizada permite que os agentes terap\u00eauticos entrem em contato direto com o revestimento da bexiga, minimizando a exposi\u00e7\u00e3o sist\u00eamica e os efeitos colaterais associados.<sup>2<\/sup> O principal objetivo da terapia intravesical \u00e9 erradicar tumores existentes ou residuais por meio de citoabla\u00e7\u00e3o direta ou imunoestimula\u00e7\u00e3o.<sup>3<\/sup> Durante o procedimento, o medicamento \u00e9 instilado na forma l\u00edquida e retido na bexiga por um per\u00edodo determinado, normalmente de 1-2 horas, antes de ser eliminado pela mic\u00e7\u00e3o.<sup>4<\/sup> Essa modalidade de tratamento \u00e9 utilizada predominantemente no c\u00e2ncer de bexiga n\u00e3o m\u00fasculo-invasivo (CBNMI) e no carcinoma in situ (CIS), servindo como terapia adjuvante ap\u00f3s a ressec\u00e7\u00e3o transuretral de tumor de bexiga (TURBT) para reduzir as taxas de recidiva e progress\u00e3o.<sup>1,3<\/sup>","gt-synonyms":"Administra\u00e7\u00e3o intravesical, instila\u00e7\u00e3o intravesical, tratamento intravesical, quimioterapia intravesical (quando s\u00e3o usados \u200b\u200bagentes quimioter\u00e1picos), imunoterapia intravesical (quando s\u00e3o usados \u200b\u200bagentes imunoter\u00e1picos), terapia intravesical com BCG (espec\u00edfica para tratamento com Bacillus Calmette-Gu\u00e9rin)","gt-citation":"[1] Shen Z, Shen T, Wientjes MG, O'Donnell MA, Au JL. Intravesical Treatments of Bladder Cancer: Review. Pharm Res. 2008 Mar;25(7):1500-1510. DOI: 10.1007\/s11095-008-9566-7\n\n[2] American Cancer Society. Intravesical Therapy for Bladder Cancer. Updated April 17, 2025. https:\/\/www.cancer.org\/cancer\/types\/bladder-cancer\/treating\/intravesical-therapy.html\n\n[3] Bladder Cancer Advocacy Network (BCAN). Intravesical Therapy. Updated December 5, 2024. https:\/\/bcan.org\/intravesical-therapy\/\n\n[4] Memorial Sloan Kettering Cancer Center. About Intravesical Therapy. https:\/\/www.mskcc.org\/cancer-care\/patient-education\/about-intravesical-therapy\n\n[5] National Cancer Institute. Definition of intravesical chemotherapy. https:\/\/www.cancer.gov\/publications\/dictionaries\/cancer-terms\/def\/intravesical-chemotherapy","gt-clinical-context":"A terapia intravesical \u00e9 utilizada principalmente no manejo do c\u00e2ncer de bexiga n\u00e3o m\u00fasculo-invasivo (CBNMI), que inclui os c\u00e2nceres de bexiga em est\u00e1gio 0 (carcinoma in situ) e est\u00e1gio I que n\u00e3o penetraram a camada muscular da parede vesical.<sup>1<\/sup> Essa modalidade de tratamento \u00e9 empregada com mais frequ\u00eancia nos seguintes cen\u00e1rios cl\u00ednicos:\n    \n    <p>Como terapia adjuvante ap\u00f3s a ressec\u00e7\u00e3o transuretral de tumor de bexiga (TURBT), a terapia intravesical reduz significativamente o risco de recidiva tumoral, que afeta at\u00e9 70% dos pacientes com CBNMI em at\u00e9 cinco anos ap\u00f3s o tratamento inicial.<sup>3<\/sup> Uma dose \u00fanica de quimioterapia intravesical \u00e9 frequentemente administrada em at\u00e9 24 horas ap\u00f3s a TURBT, seguida de um esquema de manuten\u00e7\u00e3o baseado na estratifica\u00e7\u00e3o de risco do paciente.<sup>1<\/sup><\/p>\n    \n    <p>No CBNMI de risco intermedi\u00e1rio e alto, a terapia intravesical normalmente segue um esquema de tratamentos semanais por aproximadamente 6 semanas (fase de indu\u00e7\u00e3o), seguido de tratamentos de manuten\u00e7\u00e3o menos frequentes, que se estendem de 1 ano no risco intermedi\u00e1rio a at\u00e9 3 anos nos c\u00e2nceres de alto risco.<sup>1,2<\/sup> Demonstrou-se que uma \u00fanica instila\u00e7\u00e3o imediata de quimioterapia ap\u00f3s a TURBT, isoladamente, reduz a taxa de recidiva em 5 anos de cerca de 59% para 45% em compara\u00e7\u00e3o com a TURBT isolada.<sup>3<\/sup><\/p>\n    \n    <p>A terapia intravesical \u00e9 particularmente valiosa no tratamento do carcinoma in situ (CIS), um c\u00e2ncer plano de alto grau dif\u00edcil de remover completamente apenas com cirurgia.<sup>2<\/sup> A aplica\u00e7\u00e3o direta do medicamento no revestimento da bexiga permite o tratamento direcionado dessas les\u00f5es superficiais, por\u00e9m agressivas.<\/p>\n    \n    <p>S\u00e3o empregadas duas categorias principais de agentes terap\u00eauticos intravesicais:<\/p>\n    \n    <p>Os agentes imunoter\u00e1picos estimulam o sistema imunol\u00f3gico do organismo a atacar e destruir as c\u00e9lulas cancerosas. O bacilo de Calmette-Gu\u00e9rin (BCG) continua sendo o agente imunoter\u00e1pico de primeira linha padr\u00e3o-ouro para o CBNMI de alto risco e o CIS, demonstrando efic\u00e1cia superior na preven\u00e7\u00e3o de recidivas em compara\u00e7\u00e3o com v\u00e1rios agentes quimioter\u00e1picos.<sup>3<\/sup> Para a doen\u00e7a n\u00e3o responsiva ao BCG, as op\u00e7\u00f5es mais recentes aprovadas pela FDA incluem o nadofaragene firadenovec (Adstiladrin), uma terapia g\u00eanica que introduz o interferon alfa-2b para ativar c\u00e9lulas imunol\u00f3gicas, e o nogapendekin alfa inbakicept (Anktiva), que potencializa a resposta imunol\u00f3gica ao ativar a interleucina-15.<sup>2,3<\/sup><\/p>\n    \n    <p>Os agentes quimioter\u00e1picos destroem diretamente as c\u00e9lulas cancerosas que se dividem rapidamente. Os quimioter\u00e1picos intravesicais mais utilizados incluem mitomicina C, gencitabina, docetaxel, valrubicina, epirrubicina e tiotepa.<sup>1,2<\/sup> Esses agentes s\u00e3o particularmente valiosos para pacientes ineleg\u00edveis ou n\u00e3o responsivos \u00e0 terapia com BCG.<\/p>\n    \n    <p>A sele\u00e7\u00e3o de pacientes para a terapia intravesical baseia-se na estratifica\u00e7\u00e3o de risco, com fatores como grau, est\u00e1gio, tamanho e multiplicidade do tumor e hist\u00f3rico de recidivas anteriores determinando o agente e o esquema de tratamento adequados.<sup>4<\/sup> O tratamento \u00e9 administrado por meio de um cateter inserido na bexiga pela uretra, e o medicamento \u00e9 retido por um per\u00edodo determinado antes de ser eliminado pela mic\u00e7\u00e3o.<sup>4<\/sup><\/p>\n    \n    <p>Os efeitos colaterais geralmente s\u00e3o localizados na bexiga e incluem sintomas miccionais irritativos, hemat\u00faria leve e espasmos vesicais.<sup>2<\/sup> Os efeitos colaterais sist\u00eamicos s\u00e3o m\u00ednimos devido \u00e0 absor\u00e7\u00e3o limitada atrav\u00e9s do urot\u00e9lio, o que constitui uma das principais vantagens dessa abordagem terap\u00eautica.<sup>1,2<\/sup><\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":108},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.6 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Terapia Intravesical: Tratamento Local na Bexiga | Rigicon<\/title>\n<meta name=\"description\" content=\"Conhe\u00e7a a terapia intravesical: instila\u00e7\u00e3o de BCG, mitomicina C e outros agentes na bexiga. 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