Choanal and angiomatous polyps of the sinonasal tract.
Choanal and angiomatous polyps can be distinguished from ordinary sinonasal polyps by either a distinctive clinical presentation (choanal) or the histopathologic appearance (angiomatous). Nearly all choanal polyps arise within paranasal sinuses, with the antrochoanal polyp the most common. The angiomatous polyp is most often a secondary change in a choanal polyp and can be mistaken for vascular neoplasms, eg, angiofibroma.
Batsakis
J G
JG
Dept of Pathology, University of Texas M.D. Anderson Cancer Center, Houston 77030.
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D006391:Hemangioma / Q000473:pathology*; D006801:Humans; D009298:Nasal Polyps / Q000473:pathology*; D010255:Paranasal Sinus Neoplasms / Q000473:pathology*; D011127:Polyps / Q000473:pathology*