Leiomiossarcoma de bexiga: um relato de caso
Leiomyosarcoma of the urinary bladder: a case report
Amanda da Silva Anjos, Brenno Giovanni Hernando Vidotti, Maikele Ertel, John Carlos Claros Terraza, Evelyn Carolina Suquebski Dib, Filipe Vieira Kwiatkowski, Rafael Vieira Kwiatkowski, Diego Carvalho Duarte Mari
Resumo
OBJETIVOS: Descrever caso envolvendo leiomiossarcoma (LMS) de bexiga, assunto relevante devido à baixa incidência deste tumor mesenquimal maligno. Menos de 1% dos tumores vesicais primários são LMS, e apenas 200 casos relatados na literatura, desde a primeira descrição feita há um século por Gusshaver.
MÉTODOS: A conduta terapêutica proposta foi a realização de uma cistoprostatectomia radical com reconstrução à Bricker e retossigmoidectomia. No intraoperatório, evidenciou-se extensa massa proveniente da bexiga, hipervascularizada, envolvendo a parede abdominal e comprimindo ureteres e artérias ilíacas bilateralmente, prosseguindo-se com ressecção da extensa lesão em bexiga e próstata em monobloco. O material ressecado foi encaminhado para anatomopatológico, que revelou se tratar de um sarcoma fusocelular pleomórfico de dimensões 30x25x13 cm. Na imunohistoquímica, evidenciou-se leiomiossarcoma grau I (estágio II na classificação TNM).
RESULTADOS: O paciente permaneceu internado durante 15 dias na Unidade de Terapia Intensiva (UTI) por conta de ter desenvolvido insuficiência renal crônica agudizada após a cirurgia, necessitando de diálise. Teve boa evolução no pós-operatório, apesar de manter IRC dialítica. No 22º dia de pós-operatório, se encontrava constipado, porém com Bricker funcionante e sem particularidades na ferida operatória.
CONCLUSÃO: Embora a abordagem terapêutica do LMS de bexiga não seja um consenso na literatura, a modalidade pode ser justificada na situação de um tumor agressivo com prognóstico reservado.
Palavras-chave
Abstract
OBJECTIVES: To describe a case of urinary bladder leiomyosarcoma (LMS), a rare malignant mesenchymal tumor. Less than 1% of primary bladder tumors are LMS, and only 200 cases have been reported in the literature, since the first description by Gusshaver, a century ago.
METHODS: A radical cystoprostatectomy, using Bricker reconstruction and rectosigmoidectomy was performed. In the intraoperative period, an extensive and hypervascularized mass was found, involving the abdominal wall and compressing the ureters and iliac arteries bilaterally. Resection of the extensive bladder and prostate lesion was permormed in monobloc. The resected material was sent to anatomopathological analysis, which characterized a pleomorphic sarcoma fusiform cell type with necrosis, measuring 30x25x13 cm. After immunohistochemistry, a grade I (stage II in the TNM classification) leiomyosarcoma was evidenced.
RESULTS: The patient remained hospitalized for 15 days in the Intensive Care Unit (ICU) after acute renal failure after surgery, requiring dialysis. He had a good evolution in the postoperative period, despite maintaining dialysis for chronic renal failure. On the 22nd postoperative day, he was constipated, but with a functioning Bricker and with no particularities in the surgical wound.
CONCLUSION: Although the therapeutic approach to bladder LMS is not a consensus in the literature, a more radical treatment can be justified in the situation of an aggressive tumor, which often has a poor prognosis.
Keywords
References
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Submitted date:
08/30/2019
Accepted date:
05/27/2020


