The Study of Prognostic Factor of the Parotid Tumor

Park, Seok Jin; Shim, Yoon Sang; Oh, Kyung Kyoon; Lee, Yong Sik; Lee, Jang Han; Kim, Yong Jeong

Abstract

BACKGROUND: Tumors developing in the parotid gland tend to be of a large variety of histopathologic types. The relative rarity of parotid gland tumors makes epidemiologic study more difficult. To develop a rational therapeutic plan for tumors of the parotid gland, the surgeon must be fully cognizant of the factors that may affect survival. MATERIALS AND METHOD: The authors retrospectively studied 110 patients with histologically confirmed salivary gland tumor in the parotid glands at Korea Cancer Center between 1986 and 1995. We analyzed the histopatologic type and 5-year survival rate according to the some prognostic factors.
RESULTS
Among the 110 patients, 39 had malignant parotid tumors. There were no recurtence in those who had parotid tumors. The overall 5-year survival rate was 62.4%. We observed statistically significant differences for patients of different clinical stages and histological grade.
CONCLUSION
In summary, the clinical stage and histological grade are the significant prognostic factors, and these factors need to be considered in the treatment of parotid gland tumors.