A Large, Severely Obstructive, Calcified Mass in the Midsegment of Aortic Arch.

Severe obstructive lesions in the aortic arch are rare. Crossing such lesions poses additional challenges in patients who require cardiac catheterizations. Oftentimes, specialized catheters are required to negotiate the lesion. Herein, we are reporting a series of case images that illustrate a severe lesion in the aortic arch during coronary angiography.