悪性腫瘍が疑われたまれな鼻腔内多形腺腫の１例

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  • A Rare Case of Pleomorphic Adenoma of the Nasal Cavity Mimicking Malignancy

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<p> We report a rare case of pleomorphic adenoma (PA) of the nasal cavity.<br>  A 71-year-old woman presented with a slow-growing mass in the nasal cavity that was initially diagnosed as epithelial-myoepithelial carcinoma (EMC) by fine-needle aspiration (FNA). Tumor resection with a 3-mm margin was performed. Reconstructive surgery was performed after diagnostic confirmation of PA. The defect was reconstructed using a cheek-based hinged flap for the nasal lining and a nasolabial V-Y advancement flap for outer skin coverage.<br>  The patient's postoperative course was uneventful, no tumor recurrence was seen over >2 years, and the aesthetic results were satisfactory.<br>  PA originating from the nasal cavity contains more epithelial tissue than PA originating from the major salivary glands; therefore, the tumor may be misdiagnosed as an epithelial malignancy. In the case of a preoperative diagnosis of suspected EMC by FNA, additional partial biopsy is recommended.</p>

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