title: Stromal calcification in choanal polyp.
abstract: A 50-year-old man, presenting with headache, was suspected of having a malignant nasopharyngeal tumor on the basis of his CT results. A CT scan revealed diffuse calcification in a large nasopharyngeal polyp. Xeroradiography of the specimen demonstrated the calcifications to extend centrally along the stroma. The histology and the radiologic features of this choanal polyp, resulting from diffuse central calcification of the stroma, are a unique feature that might mimic malignancy.
authors.affiliation: Department of Otolaryngology, Mount Sinai Hospital, University of Toronto, Ontario, Canada.
authors.forename: E
authors.initials: E
authors.lastname: Reifen
authors.forename: A M
authors.initials: AM
authors.lastname: Noyek
mesh_terms: D002114:Calcinosis / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000000981:diagnostic imaging*; D011127:Polyps / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014986:Xeroradiography