What is agenesis?

Complete absence of organ and primordium, may be total lack of organ (renal agenesis), absence of an organ part (agenesis of corpus callosum) or lack of tissues within an organ (no germ cells in testicles - Sertoli Cell Only syndrome) Bilateral renal agenesis is incompatible with life (stillborn) while unilateral uncommon but compatible w/life if no other anomaly is present.