A congenital vascular malformation that presents as localized or generalized erythematous-telangiectatic lesions with a reticular pattern; the lesions are almost always present at birth or develop in the first days of life. Cutis marmorata telangiectatica congenita (CMTC) appears as marble-like pattern (mottling) on the surface of the skin. In contrast to cutis marmorata, the marbling is more severe and always visible. [ PMID:25864701 PMID:22483320 ]