{"id":12749,"date":"2025-07-23T10:37:26","date_gmt":"2025-07-23T14:37:26","guid":{"rendered":"https:\/\/www.rigicon.com\/glossary-term\/chancre\/"},"modified":"2025-07-23T10:37:26","modified_gmt":"2025-07-23T14:37:26","slug":"cancro","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/cancro\/","title":{"rendered":"Cancro"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[126],"glossary-product":[],"class_list":["post-12749","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-urological-conditions"],"acf":{"gt-definition":"<p>Um cancro \u00e9 uma \u00falcera redonda, firme e indolor que se forma no local de entrada da bact\u00e9ria <i>Treponema pallidum<\/i>, representando a les\u00e3o prim\u00e1ria e a primeira manifesta\u00e7\u00e3o cl\u00ednica da infec\u00e7\u00e3o por s\u00edfilis.<sup>1<\/sup> O cancro normalmente aparece aproximadamente 3 semanas (varia\u00e7\u00e3o de 10 a 90 dias) ap\u00f3s a exposi\u00e7\u00e3o ao organismo infeccioso.<sup>2<\/sup> Ele come\u00e7a como uma p\u00e1pula que rapidamente sofre eros\u00e3o para formar uma \u00falcera n\u00e3o exsudativa de base limpa, com bordas elevadas e endurecidas, medindo aproximadamente 1-2 cm de di\u00e2metro.<sup>3<\/sup> A les\u00e3o cont\u00e9m numerosas espiroquetas, tornando-a altamente contagiosa, e geralmente \u00e9 acompanhada por linfadenopatia regional.<sup>4<\/sup> Sem tratamento, o cancro cicatriza espontaneamente dentro de 3-6 semanas, deixando cicatrizes m\u00ednimas ou nenhuma cicatriz, mas a infec\u00e7\u00e3o progride para secund\u00e1ria s\u00edfilis \u00e0 medida que a bact\u00e9ria se dissemina por todo o corpo.<sup>5<\/sup><\/p>\n<p>Na urologia, o termo cancro (c\u00e2ncer) abrange diversas neoplasias malignas do trato geniturin\u00e1rio. Os mais prevalentes incluem c\u00e2ncer de pr\u00f3stata (segundo mais comum em homens), c\u00e2ncer de bexiga, carcinoma de c\u00e9lulas renais e c\u00e2ncer de test\u00edculo. Cada tipo possui caracter\u00edsticas epidemiol\u00f3gicas, histopatol\u00f3gicas e terap\u00eauticas espec\u00edficas, com avan\u00e7os significativos nas \u00faltimas d\u00e9cadas em diagn\u00f3stico e tratamento.<\/p>","gt-synonyms":"\u00dalcera sifil\u00edtica prim\u00e1ria, cancro duro, cancro Hunteriano, les\u00e3o prim\u00e1ria sifil\u00edtica, sifiloma prim\u00e1rio","gt-citation":"[1] Singh AE, Romanowski B. Syphilis: Review with Emphasis on Clinical, Epidemiologic, and Some Biologic Features. Clin Microbiol Rev. 1999 Apr;12(2):187-209. DOI: 10.1128\/cmr.12.2.187\n\n[2] Tiecco G, Degli Antoni M, Storti S, et al. A 2021 Update on Syphilis: Taking Stock from Pathogenesis to Vaccines. Microorganisms. 2021;9(11):2324. DOI: 10.3390\/microorganisms9112324\n\n[3] Read PJ, Donovan B. Clinical aspects of adult syphilis. Intern Med J. 2012;42(6):614-620. DOI: 10.1111\/j.1445-5994.2012.02814.x\n\n[4] Peeling RW, Mabey D, Kamb ML, et al. Syphilis. Nat Rev Dis Primers. 2017;3:17073. DOI: 10.1038\/nrdp.2017.73\n\n[5] Hook EW 3rd. Syphilis. Lancet. 2017;389(10078):1550-1557. DOI: 10.1016\/S0140-6736(16)32411-4","gt-clinical-context":"<p>Os cancros s\u00e3o clinicamente significativos, pois representam a manifesta\u00e7\u00e3o inicial da s\u00edfilis prim\u00e1ria, uma infec\u00e7\u00e3o sexualmente transmiss\u00edvel causada pela bact\u00e9ria espiroqueta <i>Treponema pallidum<\/i>.<sup>1<\/sup> A les\u00e3o normalmente aparece no local da inocula\u00e7\u00e3o, mais comumente na genit\u00e1lia, mas tamb\u00e9m pode ocorrer nos l\u00e1bios, l\u00edngua, faringe, reto ou outros locais de contato sexual. contato.<sup>2<\/sup> Nas mulheres, o cancro pode se desenvolver no colo do \u00fatero ou dentro da vagina, muitas vezes passando despercebido devido \u00e0 sua natureza indolor e localiza\u00e7\u00e3o interna.<sup>3<\/sup><\/p>\n \n <p>Clinicamente, o cancro \u00e9 um importante marcador de diagn\u00f3stico que deve levar a testes e tratamento imediatos. A presen\u00e7a de cancro indica s\u00edfilis ativa e altamente infecciosa que pode ser facilmente transmitida atrav\u00e9s do contato direto com a les\u00e3o.<sup>4<\/sup> A linfadenopatia regional, caracterizada por linfonodos firmes, emborrachados e indolores, est\u00e1 presente em aproximadamente 80% dos pacientes com s\u00edfilis prim\u00e1ria.<sup>5<\/sup><\/p>\n \n <p>O diagn\u00f3stico normalmente \u00e9 confirmado atrav\u00e9s de microscopia de campo escuro do exsudato da les\u00e3o, que pode demonstrar as espiroquetas m\u00f3veis em saca-rolhas caracter\u00edsticas, ou mais comumente atrav\u00e9s de testes sorol\u00f3gicos.<sup>1<\/sup> \u00c9 importante observar que enquanto o cancro est\u00e1 se desenvolvendo, os testes sorol\u00f3gicos ainda podem ser negativos, sendo necess\u00e1rio repetir os testes se a suspeita cl\u00ednica for alta.<sup>4<\/sup><\/p>\n \n <p>O tratamento da s\u00edfilis prim\u00e1ria com cancro consiste em 2,4 milh\u00f5es de unidades de penicilina G benzatina administradas por via intramuscular em dose \u00fanica.<sup>2<\/sup> O tratamento precoce \u00e9 crucial para prevenir a progress\u00e3o para est\u00e1gios secund\u00e1rios e terci\u00e1rios da s\u00edfilis, o que pode levar a complica\u00e7\u00f5es cardiovasculares, neurol\u00f3gicas e outras complica\u00e7\u00f5es sist\u00eamicas significativas.<sup>3<\/sup> Para pacientes al\u00e9rgicos \u00e0 penicilina, alternativa os regimes incluem doxiciclina ou tetraciclina, embora estes sejam considerados menos eficazes.<sup>5<\/sup><\/p>\n \n <p>Os profissionais de sa\u00fade devem manter um alto \u00edndice de suspeita de s\u00edfilis em pacientes que apresentam \u00falceras genitais, especialmente aqueles que s\u00e3o indolores, pois o diagn\u00f3stico e o tratamento precoces s\u00e3o essenciais para prevenir a transmiss\u00e3o e complica\u00e7\u00f5es.<sup>1<\/sup><\/p>\n<p>As diretrizes da EAU 2023 enfatizam a import\u00e2ncia do diagn\u00f3stico precoce e da estratifica\u00e7\u00e3o de risco para otimizar os resultados. O c\u00e2ncer de pr\u00f3stata pode ser gerido com vigil\u00e2ncia ativa em casos de baixo risco. O c\u00e2ncer de bexiga requer cistoscopia e ressec\u00e7\u00e3o transuretral. O carcinoma renal \u00e9 frequentemente tratado com nefrectomia parcial. O c\u00e2ncer de test\u00edculo tem taxas de cura superiores a 95% com tratamento multimodal.<\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":46},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Cancro na Urologia: Tipos e Abordagens | Rigicon<\/title>\n<meta name=\"description\" content=\"Vis\u00e3o geral dos cancros urol\u00f3gicos: pr\u00f3stata, bexiga, rim e test\u00edculo. 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