Congenital hypertrophy of a renal papilla.
D000328:Adult; D003937:Diagnosis, Differential; D006417:Hematuria / Q000209:etiology; D006801:Humans; D006984:Hypertrophy; D007668:Kidney / Q000002:abnormalities*; D007680:Kidney Neoplasms / Q000175:diagnosis; D008297:Male