이하선에서 기원한 다형성 저등급 선암종 1예

A Polymorphous Low-Grade Adenocarcinoma (PLGA) of the major salivary gland is an extremely rare case over the world. The PLGA is usually a well-recognized tumor with a predilection for minor salivary glands. Furthermore, A PLGA arising in the parotid gland is difficult to diagnose clinically and cytohistologically. Because the tumor present an indolent clinical course and its histologic pattern is similar to adenocystic carcinoma and pleomorphic adenoma. We present a rare case of PLGA arising within the left parotid gland in a 23-year-old man with a review of the literature. (J Clinical Otolaryngol 2015;26:104-107)