Abstract
Klippel-Trenaunay-Weber syndrome (KTW), also known as angio-osteohypertrophy syndrome,
is a complex developmental disorder characterized by asymmetric hemi-hypertrophy of
limbs and trunk due to bony and soft tissue overgrowth that may extend across the
midline, varicose veins, and cutaneous hemangiomata. This rare syndrome has been previously
described in the prenatal period by ultrasonography, and in literature, there are
quite different presentation of cases. We describe a case suggested as a KTW syndrome
by prenatal ultrasonography. The sonographic appearance of an unilateral leg hypertrophy
associated with irregular echolucent cystic areas was consistent with KTW syndrome.
A spheric, weak-echogenic mass without any active blood flow located in the umbilical
cord revealed by color Doppler ultrasonography was an unexpected finding. The postpartum
examination confirmed the prenatal diagnosis.
Keywords
Klippel-Trenaunay-Weber (KTW) syndrome - prenatal diagnosis - hemangioma
