Leiomyoma of the urinary bladder.

ABSTRACT

Benign mesenchymal tumors of the bladder are rare and comprise less than 1% of the all bladder neoplasms. Leiomyoma is the most common type and comprises 35% of these tumors. These tumors may develop in submucosal (63%), intramural (7%) or subserosal (30%) layer, at any region of the bladder. The clinical presentation is varied and may include obstructive symptoms(50%), irritative symptoms (38%) and hematuria (11%). There are asymptomatic cases (19%), which make the diagnosis more difficult. Occurs more frequently in women than in men (31). The most common diagnostic investigations are ultrasonography, intravenous urography, computerized tomography scan and the magnetic resonance imaging. A 66 year old man presented with long standing voiding obstructive symptoms. Various examinations were performed in the last 2 years and was diagnosed either prostatic enlargement or bladder tumor. Cystoscopy was not available for confirming the diagnosis. The surgical exploration revealed a well-circumscribed mass at the bladder neck with moderate enlargement of the prostate. The pathological examination revealed a leiomyoma of the bladder. The post operative period was uneventful and the patient is doing well, without recurrence of the symptoms.