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Rationale: Sinonasal inverted papilloma (IP) is a locally aggressive tumor found in the schneiderian membrane, lining the nasal cavity and paranasal sinuses. Patient concerns: We report a case of a… Click to show full abstract
Rationale: Sinonasal inverted papilloma (IP) is a locally aggressive tumor found in the schneiderian membrane, lining the nasal cavity and paranasal sinuses. Patient concerns: We report a case of a 63-year-old woman with undifferentiated carcinoma (UC) arising in an IP in the left maxillary sinus. Diagnoses: The preoperative diagnosis was IP of the maxillary sinus. Interventions: We performed endoscopic medial maxillectomy to remove the remnant mass in the left maxillary sinus. Outcomes: Histological examination of the specimen revealed typical area of IP and sinonasal UC. Lessons: Clinicians should consider sinonasal UC in the differential diagnosis of malignancy arising in the sinonasal IP.
Journal Title: Medicine
Year Published: 2017
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