Description 

Cutis marmorata telangiectatica congenita (CMTC) is a sporadic congenital disorder characterised by localised or generalised cutaneous vascular anomaly. CMTC was first described in 1922 by Van Lohuizen as a pattern of reticulate erythema and telangiectasia infrequently associated with skin atrophy and/or ulceration.1 It is a rare benign skin lesion that is often apparent at birth with more than 50% of patients with CMTC having variations of associated defects. Body asymmetry is the most common (33%) associated anomaly reported.1

A 5-day-old female baby was born at term following an uneventful pregnancy. At birth, she weighed 2800 g, and her growth profile was appropriate for her age. Her general physical examination was unremarkable except for the appearance of a 3×4 cm bluish-purple skin lesion over the right knee. The skin lesion had erythematous reticulated appearance at the periphery and ulceration at the centre with subcutaneous atrophy (figure 1). There was no limb asymmetry, other vascular lesions, bony defects …