Coronary obstruction by a calcific pericardial ring.

We report the unique case of a 62-year-old man whose left anterior descending artery was intermittently obstructed by a heavily calcified pericardial ring. This is a rare case in which a coronary artery has been compressed because of constrictive pericarditis.

Hypercoagulable state leading to paraplegia in a middle-aged man.

A 37-year-old man presented with an unusual thrombotic disorder characterized by acute paraplegia and the absence of palpable pulses due to extensive arterial thrombosis of the aorta and its distal branches. The patient had an extremely complicated course that necessitated multiple revascularization procedures over a 1.5-year period.