Dermoscopy and trichoscopy in Klippel-Trénaunay syndrome

Klippel-Trénaunay syndrome (KTS) is a slow-flow vascular malformation characterized by the triad of capillary malformation, limb hypertrophy, and venous malformation, with or without lymphatic malformation. Diagnosis requires the presence of at least 2 of these 3 clinical features; however, there is no consensus regarding dermoscopic or trichoscopic findings. We present the case of a 54-year-old woman with a history of congenital arteriovenous malformation who exhibited clinical, histopathologic, dermoscopic, and trichoscopic findings suggestive of KTS associated with a lower right limb ulcer. We describe a case of KTS diagnosed in adulthood and highlights the potential use of adjunctive diagnostic tools, including trichoscopy and dermoscopy.