Weak left upper limb pulse! Could be anomalous origin of left subclavian artery

Abstract

A rare but treatable condition of anomalous origin of the left subclavian artery (LSCA) from the left pulmonary artery (LPA) notoriously causes subclavian steal syndrome and pulmonary steal syndrome. We present two cases of anomalous origin of LSCA, from pulmonary artery, their modes of presentation, cardiac evaluation and management with a brief review of literature.