title: [Recurring tumors of the parotid gland with special reference to pleomorphic adenoma].
abstract: 161 patients with parotid tumors seen between 1974 and 1980 are analyzed. A recurrence rate of 20% was found for both benign and malignant tumors. 76% of the recurrent tumors were judged to have been inadequately excised at the first operation. Pleomorphic adenomas had a recurrence rate of 25%. More than half these tumors exhibited multinodular patterns of recurrence. Therefore, a recurrent pleomorphic adenoma should not be reoperated upon for at least one year.
mesh_terms: D008949:Adenoma, Pleomorphic / Q000473:pathology*; D000328:Adult; D002471:Cell Transformation, Neoplastic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local / Q000473:pathology*; D010307:Parotid Neoplasms / Q000473:pathology*
vernacular_title: Die Rezidivtumoren der Glandula parotis unter besonderer Berücksichtigung des pleomorphen Adenoms.