The Roberts-SC phocomelia syndrome is a rare autosomal recessive inherited
disorder clinically manifested by tetraphocomelia, pre- and postnatal growt
h retardation, and craniofacial abnormalities (skull, eyes, lip, and palate
), accompanied at times by centromer puffing and splitting, renal abnormali
ties, heart defect, clitoral or penile enlargement, and bilateral corneal o
pacities. Mental retardation is common in surviving patients.