The occurrence of double primary tumors in an individual patient was first described by Billroth approximately 100 years ago. The genitourinary organs appear to be at greater risk for double primary tumors, because the urological system is at higher risk for primary tumors( prostate and bladder ). Multifocal involvement is a well-known feature of transitional cell carcinoma. But the coexistence of two separate primary urothelial carcinomas occurring simultaneously is extremely unusual. We report on a 25-year-old man who had synchronous double primary tumors : squamous cell carcinoma of the bladder and transitional cell carcinoma of the ureter.
Adult ; Carcinoma, Squamous Cell* ; Carcinoma, Transitional Cell* ; Humans ; Prostate ; Ureter* ; Urinary Bladder*