RESUMO
Leiomyosarcoma of the urinary bladder is an extremely rare disease. In this study, which also includes a review of the literature, a new case of urinary bladder leiomyosarcoma has been reported in a 65-year old male, which was detected during an investigation of total hematuria accompanied by burning upon micturition. The clinical examination was normal, but ultrasonography followed by bladder endoscopy showed the presence of a large bladder tumor. The definitive diagnosis of this type of tumor can only be made after histological and immunohistochemical investigation, and to avoid unnecessary surgery it is essential to first differentiate it from an inflammatory pseudosarcoma. Although in the present study the outcome following total cystoprostatectomy was favorable at 3 months follow-up, in general the prognosis is uncertain due to the potentially invasive character of this type of tumor. Given the limited number of studies on the subject treatment still remains controversial, but is essentially based on surgical excision, possibly with adjuvant chemotherapy.
