粘液嚢胞様像を呈した上顎洞内反性乳頭腫の1例 A case of inverted papilloma in the maxillary sinus showing a mucous cyst-like image
An inverted papilloma arising in the nasal cavity or paranasal sinus is a rare benign disease, with a tendency towards recurrence and malignant progression. We describe a patient with an inverted papilloma in the right maxillary sinus. The patient was a 55-year-old woman with chronic pain in the maxillary region. A panoramic radiograph revealed unique features, closely resembling those of a mucous cyst in the floor of the maxillary sinus. The presence of a mass showing soft tissue density was confirmed on computed tomography. A mucous cyst occurring in the maxillary sinus was diagnosed. The mass was removed from the sinus by an open-window technique. A histological examination during surgery suggested that the biopsy specimens were cyst walls. However, the resected specimen was finally diagnosed to be an inverted papilloma. Recurrence was detected 5months later and verified on computed tomography. The patient underwent surgery to remove the recurrent tumor. Her postoperative course was uneventful, and there has been no sign of recurrence.
日本口腔外科学会雑誌 51(11), 539-542, 2005-11-20
Japanese Society of Oral and Maxillofacial Surgeons