STUDY OF OPERATIVE SALIVARY GLAND LESIONS DURING 27 YEAR PERIOD

Preoperative diagnosis of saivary gland tumor is important for determining of operative procedure. During 27 year period from Jan. 1960 to Dec. 1986, we experienced a total of 178 cases of salivary gland tumors, which included 104 cases of parotid lesions, 65 of submandibular, 3 of sulingual, and 6 of others. The malignancy accounted 22% for the parotid gland and 15% for the submandibular gland. While in view of only tumor lesions, these figures were 26% and 32% respectively. Mean ages were 39 years for benign and 53 years for malignant lesions. Frequently encountered benign lesions were pleomorphic adenoma (67%) and sialolithiasis & inflammations (9%) in the parotid gland, while sialolithiasis & inflammation (53%) and pleomorphic adenoma (35%) in the submandibular gland. Among malignant diseases mucoepidermoid carcinoma (29%) was the most common followed by carcinomas in pleomorphic adenoma (18%) and adenocarcinoma (18%).