Clinical Study of Parotid Tumors A 20 Year Statistical Analysis of 633 Cases

During the 20 years from 1977 to 1996, 633 cases underwent excisions of parotid tumors (539 benign and 94 malignant) in the department of Otolaryngology of Kansai Medical University. The incidence of Warthin's tumors in the years from (1987 to 1996) was higher than that in the years from 1977 t...

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Published inNippon Jibi Inkoka Gakkai Kaiho Vol. 102; no. 6; pp. 801 - 808
Main Authors Kakimoto, Shingo, Iwai, Hiroshi, Kumazawa, Hirobumi, Nakamura, Akihiko, Yukawa, Hisaya, Baba, Kazuyasu, Asako, Mikiya, Yamashita, Toshio
Format Journal Article
LanguageEnglish
Japanese
Published Japan The Oto-Rhino-Laryngological Society of Japan, Inc 01.06.1999
Subjects
Adenolymphoma - complications
Adenolymphoma - epidemiology
Adolescent
Adult
Age Factors
Aged
Carcinoma, Mucoepidermoid - complications
Carcinoma, Mucoepidermoid - epidemiology
Child
facial nerve palsy
Facial Paralysis - epidemiology
Facial Paralysis - etiology
Frey's syndrome
Humans
Incidence
Japan - epidemiology
lethality
Middle Aged
parotid gland tumor
Parotid Neoplasms - complications
Parotid Neoplasms - epidemiology
Postoperative Complications - epidemiology
Sex Factors
statistical analysis
Survival Rate
Sweating, Gustatory - epidemiology
Japan
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Summary:During the 20 years from 1977 to 1996, 633 cases underwent excisions of parotid tumors (539 benign and 94 malignant) in the department of Otolaryngology of Kansai Medical University. The incidence of Warthin's tumors in the years from (1987 to 1996) was higher than that in the years from 1977 to 1986. On the other hand, the incidence of mucoepidermoid carcinomas was less than in previous reports. Tumors accompanied with spontaneous pain or facial nerve palsy and with invasion to both lobes frequently indicated malignancy. Facial nerve palsy caused by either benign or malignant tumors before operation showed no improvement after surgery. The incidences of facial nerve palsy (1.0% in benign, and 18.3% in malignant) and Frey's syndrome (17.8% in benign, and 18.3% in malignant) after surgery were lower than those in other reports of both benign and malignant tumors. Five-year mortality was 76.1%. All deaths that occurred five years after operation involved highly grade malignant tumors.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0030-6622
1883-0854
DOI:10.3950/jibiinkoka.102.801