The cytologic and histopathologic findings in an inverted Schneiderian papilloma of the paranasal sinuses are described. This uncommon neoplasm of the sinonasal region is characterized by a significant recurrence rate and an association with squamous cell carcinoma in 7-13% of patients. Fine needle aspiration of inverting papillomas may allow rapid identification of the lesion when a tissue biopsy is impractical.
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Univ Calif San Diego, Div Otolaryngol Head & Neck Surg, La Jolla, CA 92093 USAUniv Calif San Diego, Div Otolaryngol Head & Neck Surg, La Jolla, CA 92093 USA
Saddawi-Konefka, Robert
Hariri, Nosaibah
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Univ Calif San Diego, Dept Pathol, La Jolla, CA 92093 USAUniv Calif San Diego, Div Otolaryngol Head & Neck Surg, La Jolla, CA 92093 USA
Hariri, Nosaibah
Shabaik, Ahmed
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Univ Calif San Diego, Dept Pathol, La Jolla, CA 92093 USAUniv Calif San Diego, Div Otolaryngol Head & Neck Surg, La Jolla, CA 92093 USA
Shabaik, Ahmed
Weissbrod, Philip A.
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Univ Calif San Diego, Div Otolaryngol Head & Neck Surg, La Jolla, CA 92093 USAUniv Calif San Diego, Div Otolaryngol Head & Neck Surg, La Jolla, CA 92093 USA