Nephrogenic adenoma of the bladder: report of 10 cases.

Nephrogenic adenoma is an uncommon metaplastic lesion of the lower urinary tract that usually is associated with antecedent inflammation or surgical procedures. We report 10 new cases, 8 of which followed renal transplantation and 1 of which followed partial cystectomy for squamous cell carcinoma of the bladder. No predisposing factors could be identified in 1 patient. The nephrogenic adenomas, all of which were located in the bladder, were treated by either biopsy with fulguration or transurethral resection. The lesion recurred locally in 1 patient.