Leiomyosarcoma of the bladder is an aggressive and rare tumor, with less than 200 reported cases. The treatment of bladder leiomyosarcoma is controversial although in most cases an aggressive surgical therapy is preferred. Usually, a radical cystectomy is performed, as it is considered to have a better disease-specific survival rate. A 43-year-old man presented to our Urology Department with painless macroscopic hematuria. He was submitted to transurethral resection of the tumor. The transurethral resection was complete and revealed only this small single lesion and the rest of the bladder was normal with no other lesion or suspicious lesion. The final histology revealed leiomyosarcoma of the bladder. Due to his age and the aggressiveness of the tumor after a thorough and detailed discussion with the patient a conservative management with aggressive follow up was decided. The patient a year after the diagnosis is in perfect condition without sign of a recurrence or metastastes.
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