Klippel-Trenaunay syndrome or not? An exploration of atypical presentations

Klippel-Trenaunay syndrome (KTS) is a rare, congenital disorder typically emerging in early infancy or childhood. The classic presentation of KTS is distinguished by a triad of clinical features: a port-wine stain, early-onset varicosities and limb overgrowth. However, a notable variant of KTS has been documented, characterised by limb shortening rather than lengthening, occasionally referred to as 'inverse KTS'. This report details two cases that display this unusual presentation-both patients had classical features of port-wine stain and varicose veins but both experienced shortening of the affected limb. Whether these cases represent a variant of KTS or a new clinical syndrome altogether is uncertain. They however offer valuable insights into the nuances and breadth of clinical manifestations associated with this syndrome.