Autosomal dominant atretic cephalocele with phenotype variability: report of a Brazilian family with six affected in four generations. 
Atretic cephalocele is a clinicopathological entity, which is different from the common form of cephalocele.  Its etiopathogenesis has not been completely explained and there are only two previous reports of familial recurrence.  We report a Brazilian family with autosomal dominant inheritance with variable expressivity.