Ｋｌｉｐｐｅｌ－Ｔｒｅｎａｕｎｙａ综合征（简称Ｋ－Ｔ综合征）是一种较少见的先天性血管疾患，为本应退化的胎儿期坐骨静脉系统出生后继续发育而导致臀部和下肢外侧大量异常静脉，并伴深静脉发育不全而产生一系列临床症状，如患侧下肢静脉曲张，骨－软组织肥大及皮肤血管 Klippel-Trenaunya syndrome (K-T syndrome) is a rare congenital vascular disorder that continues to develop after the birth of the ischialic venous system in the degenerative fetus, resulting in a large number of abnormal veins in the buttocks and lower limbs With deep hypoplasia and a series of clinical symptoms, such as ipsilateral lower extremity varicose veins, bone - soft tissue hypertrophy and skin and blood vessels