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DUNN EDWARD J. M.D.; KENT, TYLER M.D.; HINES, JAMES M.D.; COHN, ISIDORE JR. M.D.
Annals of Surgery: October 1976
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A 25-year experience with parotid tumors was reviewed. From a total of 250 neoplasms, 173 were histologically benign and 77 were malignant. Benign mixed tumors accounted for 59% of all lesions. Clinical parameters used to diagnose parotid neoplasms were found to be unreliable in determining whether a given tumor was benign or malignant. The mean age for malignant lesions was 10 years greater than for benign lesions. The phenomenon of malignant transformation of a benign tumor was considered in four patients. Complete surgical excision is the safest and preferred method for diagnosis. Preoperative needle or incisional biopsy are associated with a high degree of local recurrence. The appropriate management of any parotid tumor is predicated on special histological type. Local excision or enucleation no longer have a place in the surgical management of benign parotid tumors. Postoperative tumor recurrence and morbidity are directly related to awareness of surgical anatomy and pursuit of correct surgical techniques for adequate resection. The five-year recurrence rate for 102 benign mixed tumors was 6%. Recurrence in malignant tumors varied with specific histological types but was generally high. Five-year survival for all malignant parotid tumors was 48%.

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