Given the low incidence and delayed diagnosis, ureterocele management in the adult population is poorly described in the literature. Moreover, there is only one case report characterizing the condition with prolapse in an adult male. Approaches to therapy include transurethral incision or puncture with or without a combined percutaneous approach, and excision with or without partial nephrectomy for a duplicated system with a nonfunctioning upper pole moiety. We present a case of prolapsed, single intravesical ureterocele in a man presenting with hematuria and lower urinary-tract symptoms. A 54-year-old man with no significant medical history presents with increasing nocturia and urinary hesitancy. The development of gross hematuria prompted urologic evaluation. On imaging, the patient was found to have 4.3 × 3.3 cm bladder mass consistent with a prolapsed ureterocele that was managed by transurethral excision with a cutting loop. Postoperatively, the patient's symptoms resolved completely without complication. We suggest that complete transurethral ureterocele excision is an effective, definitive treatment option.