High-Grade Mucoepidermoid Carcinoma Ex-Pleomorphic Adenoma of the Parotid Gland: Case Report and Review of Literature  

作　　者：Aron Z. Pollack Benjamin C. Paul Mike C. Sheu Gady Har-El 

机构地区：[1]Department of Otolaryngology-Head and Neck Surgery, New York Uni-versity School of Medicine and Lenox Hill Hospital, New York, USA

出　　处：《International Journal of Otolaryngology and Head & Neck Surgery》2014年第1期9-13,共5页耳鼻喉（英文）

摘　　要：Background: Mucoepidermoid carcinoma ex-pleomorphic adenoma (MECxPA) is an extremely rare salivary gland malignancy. With only nine prior reported cases, this entity represents a challenging histopathological diagnosis. Methods: We present a case of a 71-year-old male with an enlarging left neck mass over several months. CT showed both a parapharyngeal space mass and a separate level II neck mass. Results: The patient underwent resection of the left parapharyngeal mass and ipsilateral selective level II-IV lymphadenectomy. The final pathologic diagnosis was metastatic high-grade mucoepidermoid carcinoma ex-pleomorphic adenoma. Conclusions: We describe a novel presentation of high-grade mucoepidermoid carcinoma ex-pleomorphic adenoma as a metastatic parapharyngeal mass.Background: Mucoepidermoid carcinoma ex-pleomorphic adenoma (MECxPA) is an extremely rare salivary gland malignancy. With only nine prior reported cases, this entity represents a challenging histopathological diagnosis. Methods: We present a case of a 71-year-old male with an enlarging left neck mass over several months. CT showed both a parapharyngeal space mass and a separate level II neck mass. Results: The patient underwent resection of the left parapharyngeal mass and ipsilateral selective level II-IV lymphadenectomy. The final pathologic diagnosis was metastatic high-grade mucoepidermoid carcinoma ex-pleomorphic adenoma. Conclusions: We describe a novel presentation of high-grade mucoepidermoid carcinoma ex-pleomorphic adenoma as a metastatic parapharyngeal mass.

关 键 词：MUCOEPIDERMOID CARCINOMA CARCINOMA ex-Pleomorphic ADENOMA PLEOMORPHIC ADENOMA PAROTID Gland 

分 类 号：R73[医药卫生—肿瘤]