A Rare Presentation of Post Sternotomy Internal Mammary Artery Pseudoaneurysm

A 62 year old female presented with complaint of pulsating swelling on right para sternal region. She is a post CABG patient for which sternotomy was done. Patient was advised CT Angiography of Thoracic Aorta for further evaluation. On CT Angiography of thoracic aorta, There is a pseudo anuerysm noted arising from internal mammary artery at right para sternal region of anterior chest wall, at the level of sternal end of 2nd rib, at sternotomy site. No evidence of any luminal thrombosis.