Here we present a second example of the syndrome first reported by Holzgreve et al. [1984] in this journal, i.e., Potter sequence with persistent buccopharyngeal membrane type II, postaxial polydactyly, cleft palate, cardiac anomalies, intestinal nonfixation, and intrauterine growth retardation. This specific complex MCA syndrome is not associated with a detectable chromosome abnormality.