[Impaired venous blood flow or venous return (venous stasis), usually caused by inadequate venous valves. Venous insufficiency often occurs in the legs, and is associated with EDEMA and sometimes with VENOUS STASIS ULCERS at the ankle. ( MSH )]
UMLS (ICD9CM) C0042485 Relation/PAR: blood vessel disorder
Relation/CHD: Postphlebitic syndrome