腮腺病变的CT和MRI诊断

目的探讨腮腺病变的CT及MRI表现，旨在提高对腮腺病变的诊断水平。方法回顾性分析经临床或病理证实的85例腮腺病变的CT或MRI的表现。结果85例腮腺病变中，良性肿瘤63例（63／85，74．1％），大部分（38／63，60．9％）表现为位于腮腺浅叶的圆形、椭圆形软组织肿块，边缘光整，密度／信号均匀；恶性肿瘤12例（12／85，14．1％），大部分（9／12，75．0％）位于腮腺深叶或跨叶，表现为不规则形软组织肿块，边缘不清，密度／信号不均匀，侵犯周围组织并伴淋巴结转移；炎性及其他瘤样病变10例（10／85，11．8％）。结论CT和MRI检查均能对腮腺区病变进行有效定位，并对定性诊断具有重要价值，有利于临床治疗方案的制定。

CT and MRI Diagnosis of Parotid Diseases

Objective To analysis the CT and MRI appearances of parotid diseases, and improve the cognition parotid diseases. Methods The clinical and CT/MRI findings of in 85 eases with parotid diseases were analyzed retrospectively. Results Among 85 cases, there were 63 （ 63/85,74. 1% ） benign tumors, 12 （ 12/ 85,14. 1% ） malignant tumors, 10 （ 10/85,11.8 % ） parotitis and other tumor-like lesions. On CT and M RI, most benign tumors （38/63,60. 9% ）were located in the shallow lobe, round or oval in shape, well-defined, homogeneous or heterogeneous soft tissue mass; and most of malignant tumor（9/12,75.0% ）were located in the deep lobe or deep-shallow lobe, irregular in shape, ill-defined, heterogeneous soft tissue mass, infiltration of adjacent struc- ture and lymph node metastasis. Conclusion CT and MRI both can well demonstrate the size,number and location of parotid diseases, and they is still helpful for the diagnosis, differentiation and therapeutic decision.