T. Kusunoki, Hirotomo Homma, Yoshinobu Kidokoro, Aya Yanai, S. Hara, R. Wada, Kazuya Saito, K. Ikeda
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Neuroendocrine Carcinoma Arising in a Wound after Endoscopic Sinus Surgery for Maxillary Sinusitis
Sinonasal tumors with neuroendocrine differentiation are a rare group of neoplasms that account for only 5% of all sinonasal malignancies. Paranasal neoplasms very rarely arise postoperatively from the maxillary sinus. We encountered a case of neuroendocrine carcinoma arising in a wound after endoscopic sinus surgery for maxillary sinusitis. At the first medical examination, we tried to discriminate between maxillary tumor and postoperative recurrence of maxillary sinusitis.