Vol.96 No.9 contentsPRACTICA OTO-RHINO-LARYNGOLOGICA
Vol. 96 No.9 September 2003
Parotid Tumors; Clinical Study of 36 Cases
Hirofumi Osanai
(Nikko Memorial Hospital, Asahikawa Medical College)
Takashi Osaki
(Nikko Memorial Hospital)
Satoshi Nonaka and Yasuaki Harabuchi
(Asahikawa Medical College)
Tumors of the parotid gland are fairly frequent among head and neck tumors. In thirty six patients, tumors of the parotid gland were surgically resected in the Department of Otolaryngology, Nikko Memorial Hospital between 1996 and 2001. Pathological examination demonstrated that the most common type of tumor was pleomorphic adenoma (50.0％), followed by adenolymphoma (22.2％). Preoperative examinations including ultrasound echography, MRI, sialo-CT, radioisotope imaging and fine-needle aspiration cytology were performed. Because neither examination was sufficient for diagnosing the malignancy of tumors by single examination, multiple examinations were necessary to establish the correct diagnosis. For resection of benign parotid tumor, partial parotidectomy for sixteen patients and superficial parotidectomy for ten patients were carried out. In two patients with high-grade malignant tumors, total parotidectomy combined with neck dissection was carried out. Postoperatively, facial paresis occurred in 7 cases (21％) and Frey's syndrome occurred in 3 cases (9％).
Key words : parotid tumor, preoperative examinations, parotidectomy