Ritscher-Schinzel (cranio-cerebello-cardiac, 3C) syndrome: report of four new cases with renal involvement.

Ritscher-Schinzel (cranio-cerebello-cardiac, 3C) syndrome is a multiple congenital anomaly syndrome that is considered to be autosomal recessive although no genetic defect has yet been identified. In a consanguineous Saudi family, we have identified four patients who meet the diagnostic criteria of 3C syndrome and who also have alopecia, camptodactaly and significant renal involvement. Interestingly, two otherwise normal female siblings have unilateral renal agenesis only. This report expands the phenotypic spectrum of 3C syndrome.