Abstract：Objective: In order to improve the diagnostic accuracy, benign and malignant parotid gland were observed in CT images. Methods: The CT images of 77 patients with parotid gland tumors in our hospital from June 1st 2011 to July 31 2014 were collected. Forty-five cases were pathologically confirmed of parotid benign tumor. Twenty-five cases were malignant tumor, and seven cases were non-tumorous. The CT characteristics were analyzed and compared with pathologic findings. The CT diagnosis correspondence rate and differential diagnosis features were studied. Rseults: The rate of CT diagnosis correspondence was 83.1%(64/77), in which benign tumor diagnosis correspondence rate 84.4%(38/45) and malignant parotid gland diagnosis correspondence rate 88.0%(22/25). The location, shape, border area, invasiveness and lymph node metastasis images of parotid gland benign tumor were significantly different from those of malignant parotid gland(P<0.05). Conclusion: According to the image characteristics in CT, the benign or malignant parotid gland can be accurately diagnosed. Tumor located in deep lobe or cross depth-superficial two leaves and with irregular shape, unclear boundary and lymph node metastasis can be diagnosed as malignant tumor.
2015, Vol. 26 
