Macrocephaly‐cutis marmorata telangiectatica congenita: Report of six new patients and a review

We report on six additional patients with macrocephaly‐cutis marmorata telangiectatica congenita (M‐CMTC; MIM 602501) and review the literature. This syndrome is a multiple congenital anomalies/mental retardation and overgrowth disorder comprising macrocephaly, cutis marmorata, vascular marks of lip and/or philtrum, syndactyly, hemihypertrophy, CNS anomalies, and developmental delay. Based on the findings in our 6 patients and on 69 patients previously reported we listed the very frequent (observed in >75%), frequent (25–75%), and less frequent (>25%) components of the syndrome. © 2004 Wiley‐Liss, Inc.