[Nephrogenic adenoma of the urinary bladder with concomitant multiple adenomatous polyps of the large bowel. An abortive form of Gardner's syndrome? (author's transl)].

For the first time, a nephrogenic adenoma of the urinary bladder coinciding with multiple adenomatous polyps of the large bowel, in a 64-year-old male, is reported. The relationship of these tumors at different sites to a known clinical systemic disease is questionable; they could conceivably be ascribed to an abortive form of Gardner's syndrome. On the basis of a case report, the essential aspects of the nephrogenic adenoma of the urinary bladder are reviewed and discussed.