Embryonal Rhabdomyosarcoma Passed Per Urethra

Abstract

Embryonal rhabdomyosarcoma of the prostate is a rare mesenchymal tumor. We describe a 3-year-old boy who passed this lesion per urethra, enhancing the speed to diagnosis and treatment. To our knowledge this is the first reported case of this nature. CASE REPORT A 3-year-old boy presented to the accident and emergency department with difficulty voiding. The patient had a weeklong history of frequency, suprapubic and penile discomfort, and difficulty initiating voiding, necessitating abdominal straining. A similar episode had occurred 2 months previously, which resolved spontaneously. On the day of presentation the boy strained to void and passed a 10 8 mm. fleshy lump per urethra, which adhered to the lavatory bowl. Voiding was initiated with ease following this event. The parents retrieved the lump and presented it with their son. Abdominal examination was unremarkable and abdominal ultrasound failed to identify the origin of the lesion. The lump was immediately sent for histological analysis, the preliminary results of which indicated embryonal rhabdomyosarcoma (see figure). The patient was sent to the regional pediatric unit, where cystoscopy revealed a polypoid lesion arising from the posterior urethra above the verumontanum. Biopsy of the lesion confirmed the presence of prostatic embryonal rhabdomyosarcoma. Chemotherapy was begun in the