Lymphoepithelial cyst is rarely found in the parotid gland. We report two cases of lymphoepithelial cyst arising in the parotid gland.
Case 1. A 34-year-old man had a 2 month history of a gradually enlarging swelling in the left parotid gland. Initial examination revealed a tender, elastic, painless mass in the left parotid gland. Preoperative CT and ultrasonography showed a tumorous lesion between the superficial lobe and the deep lobe of the left parotid gland. The preoperative diagnosis was a benign parotid gland tumor.
Case 2. A 61-year-old man had noted a mass in the left parotid gland 2 weeks previously. On initial examination, a firm, elastic, painless mass was present in the anterior position of the left ear. Preoperative MR imaging and ultrasonography showed a cystic lesion in the superficial lobe of the left parotid gland. The preoperative diagnosis was Warthin's tumor or lymphoepithelial cyst.
In both patients the lesions were removed surgically, and the histological diagnosis was lymphoepithelial cysts.
