顎下腺に発生した oncocytoma の1例 A case of oncocytoma in the submandibular gland
We encountered a rare case of oncocytoma of the submandibular gland.<BR>A 73-year-old man complained of a gradually growing mass in the right submandibular region. The tumor was elastic soft and mobile, with a clear margin. Echography revealed a hypoechoic lesion, CT scans showed a welldefined homogenous submandibular mass, and MRI scans demonstrated a high-intensity mass on Ti and T2-weighted images in the right submandibular region. The tumor exhibited an intense uptake of <SUP>99m</SUP>Tc pertechnatate. Histopathological examination showed that the tumor cells consisted of large cells with eosinophilic granular cytoplasm. On the basis of these findings, we diagnosed the tumor as an oncocytoma.<BR>The postoperative course has been uneventful for 9 years.
日本口腔外科学会雑誌 50(9), 534-537, 2004-09-20
Japanese Society of Oral and Maxillofacial Surgeons