Inability to palpate the vas deferens in routine examination should alert the physician to explore the possibility of associated renal anomalies. We encountered four clinical cases of congenital unilateral renal agenesis associated with ipsilateral agenesis of the vas deferens.
Ochsner MG, Brannan W, Goodier EH. Absent Vas Deferens Associated With Renal Agenesis. JAMA. 1972;222(8):1055–1056. doi:10.1001/jama.1972.03210080135029