A Case of Extra-Submandibular Gland Pleomorphic Adenoma in Upper Lateral Neck

Korean Journal of Head & Neck Oncology 2018;34(2):65-67.
Published online November 30, 2018.

Seok Jung Hong;Mi Ji Lee;Seung Woo Kim

상측경부에 발생한 악하선 외 다형선종 1예

홍석정;이미지;김승우

Abstract

Pleomorphic adenoma (PA) is a benign tumor which usually originates from major and minor salivary glands. This tumor arising outside submandibular gland (SMG) is extremely rare. To author’s knowledge, only four cases have been reported so far in English literature. Its pathogenesis is still unclear, but it can be explained by embryologic theory of major salivary gland. A 68-year-old man with an incidental mass on left upper lateral neck visited to our clinic. The radiologic findings showed well-margined round mass outside left SMG. The excisional biopsy revealed a pleomorphic adenoma. We report the rare and unique case with a brief literature review.

Key Words: Extra-submandibular gland, Pleomorphic adenoma