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contentuptodate· Content· item f17_24_17797
©2013 UpToDate ® Print Email Angiofibroma of the head and neck Low power photomicrograph of an angiofibroma; these tumors often have a stag-horn arrangement of thin-walled vessels (black arrow). The stroma is fibrotic and hypocellular. Courtesy of G Kenneth Haines, MD.