Vol.97 No.3 contentsPRACTICA OTO-RHINO-LARYNGOLOGICA
Vol. 97 No. 3 March 2004
A Case of Clear Cell Adenocarcinoma of
the Parotid Gland
Koji Yamada, Tsunemasa Aiba, Takeshi Kubo, Tomoaki Nakano,
Tadashi Wada and Taichi Uyama
(Osaka City General Hospital)
We report a case of clear cell adenocarcinoma of the parotid gland. The patient was a 67-year-old female diagnosed as having sialolithiasis of the left submandibular gland. Computed tomography demonstrated three sialoliths in the left Warthon's duct and a small solitary mass in the right parotid gland. Physical examination showed a small, hard and painless mass in the right parotid gland. Magnetic resonance imaging demonstrated an enhanced, poorly defined tumor. The tumor was completely resected under general anesthesia, and histopathologically diagnosed as clear cell adenocarcinoma. Clear cell adenocarcinoma is a very rare, recently described low-grade malignant tumor of the salivary gland. Twenty cases of this tumor have been reported, the majority have occurred in a minor salivary gland of the oral cavity, and only four cases in the parotid gland have been reported.
Key words : clear cell adenocarcinoma, clear cell tumor, salivary gland