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July 19, 2010

Radiology Quiz Case 1: Diagnosis

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Copyright 2010 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2010

Arch Otolaryngol Head Neck Surg. 2010;136(7):742. doi:10.1001/archoto.2010.96-b

Diagnosis: Infarcted angiomatous polyps of the maxillary sinus

Infarcted angiomatous polyp, which is a rarely reported subtype of inflammatory sinonasal polyps, is characterized by dilated, large vascular spaces resulting from extensive vascular proliferation and ectasia. The angiomatous polyps usually correspond to the vascular compromised nasochoanal part of sinochoanal polyps.13The compromise of their vascular supply will lead to infarction, venous stasis, and thrombosis. The clinical, radiologic, and pathologic features of this disease may simulate a neoplastic process and can sometimes be mistaken for vascular neoplasms, eg, angiofibroma.4,5

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