Radiology
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To determine whether a peripheral high-attenuating crescent in an abdominal aortic aneurysm (AAA) on unenhanced computed tomographic (CT) scans is a sign of impending or active aneurysm rupture. ⋯ In patients without CT evidence of frank aneurysm leak, the high-attenuating crescent sign should be regarded as a sign of impending AAA rupture, particularly in patients with pain.
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To study neuroradiologic findings in patients with hypercoagulability due to antiphospholipid antibodies (APAs). ⋯ Presence of APAs should be suspected when no cause is apparent for either (a) an ischemic cerebrovascular event in young and middle-aged adults or (b) dural sinus or cerebral venous thrombosis (c) in patients with recurrent systemic arterial or venous thromboses, especially women with recurrent miscarriages.