Clinical Analysis of Parotid Cancer

• Published in: Nippon Jibi Inkoka Gakkai Kaiho Vol. 102; no. 7; pp. 883 - 890
• Main Authors: Yasumatsu, Ryuji, Ichibangase, Takashi, Tomita, Kazuhide, Hara, Takashi, Sueta, Takayuki, Hirakawa, Naoya, Higaki, Yuichiro, Tomita, Kichinobu
• Format: Journal Article
• Language: English; Japanese
• Published: Japan The Oto-Rhino-Laryngological Society of Japan, Inc 1999
• Subjects: Adult; Aged; Aged, 80 and over; Female; Humans; Lymphatic Metastasis; Male; Middle Aged; Neck Dissection - mortality; Neoplasm Staging; parotid cancer; Parotid Gland - surgery; Parotid Neoplasms - mortality; Parotid Neoplasms - pathology; Parotid Neoplasms - surgery; Prognosis; prophylactic neck dissection; surgery; Survival Rate; treatment result
• ISSN: 0030-6622; 1883-0854
• DOI: 10.3950/jibiinkoka.102.883

A clinical study was performed on 42 patients with parotid cancers initially treated in our hospital from 1972 to 1997. The five-year cumulative survival rate was 69% in the whole group and 72% in the radical surgical treatment group (n=40). The five-year survival rates according to stage were as follows: stage I, 95% (21); stage II, 75% (4); stage III, 0% (1); and stage IV, 37% (16). The factors influencing prognosis were cases of T3 and T4 (p<0.05), stage III and IV (p<0.01), and cervical lymph node metastasis (p<0.01). Regarding treatment modalities, a partial parotidectomy appeared to be a curable surgical procedure for T1 cases. However, a lobectomy is recommended for T2 cases. Furthermore our study proposed that prophylactic supraomohyoid neck dissection should be necessary for mucoepidermoid carcinoma (high-grade malignancy) and undifferentiated carcinoma of T4N0 cases.