An unusual course of aortic arch through an accessory fissure of left upper lobe of the lung: extramediastinal aortic arch

Abstract

In this case report, we present an unexpected, extramediastinal course of aortic arch through an accessory fissure of left upper lobe of the lung in a 19-year-old healthy man.

Accessory left upper lobe fissures containing vascular contents: Unusual entities depicted on CT angiography

“…5 Apart from these, a rare report mentions the presence of para-mediastinal accessory LUL fissure with an extra-mediastinal course of aortic arch coursing through it. 6 Thus, computed tomography with its excellent spatial resolution has led to an increased and better recognition of uncommon anatomical variants, as in our cases.…”

“…Fissures with left SCA are uncommon with no known reported incidence 5 . Apart from these, a rare report mentions the presence of para‐mediastinal accessory LUL fissure with an extra‐mediastinal course of aortic arch coursing through it 6 …”