Hemitrigone: renal agenesis or single ureteral ectopia.

Hemitrigone is pathognomonic of either renal agenesis or single ureteral ectopia. The latter may present as urinary incontinence in the female patient, with prostatitis or seminal vesiculitis often occurring in the male.

Cyclic adenosine monophosphate: relationship to calcium metabolism and renal lithiasis.

Recent concepts in calcium metabolism are being applied to the renal stone-forming patient. As our understanding of physiological mechanisms improves urinary cyclic nucleotide determinations are becoming useful in applied patient care. The changes in urinary cyclic adenosine monophosphate excretion as related to the different forms of hypercalciuria are reviewed.