涎腺区肿块的CT诊断

目的：探讨涎腺区病变的ＣＴ诊断价值。方法：回顾性总结经手术病理证实的３４例涎腺区肿块的临床与ＣＴ资料，对其ＣＴ表现进行了分析。结果：３４例中有２６例术前ＣＴ准确诊断，诊断符合率７３．５％，腮腺区２４例，颌下腺区１０例。良性肿块的ＣＴ表现：结节状（１３例），分叶状（５例），不规则形（３例）。大多数肿块边缘光滑，边界清晰，密度均匀。病理对照：有完整包膜１８例，无完整包膜３例。恶性肿块ＣＴ表现呈不规则形（１３例），边缘毛糙，与周围正常组织分界不清。病理对照：肿块多数无包膜（１１例）。结论：涎腺ＣＴ扫描的最大优势在于定位准确，能明确病变的范围及其与周围组织的关系，同时可根据肿块的形态及密度较好地鉴别其性质。

CT Diagnosis of Salivary Gland Masses

Objective:To evaluate CT value in diagnosing salivary gland lesions.Methods:The clinical data and CT findings of 34 cases with the major salivary gland masses confirmed by operation and pathology were discussed,the CT features were analyzed.Results:Of 34 cases,26 were correctly diagnosed before surgery,total diagnostic corresponding rate was 73.5%.24 masses located in parotid gland and 10 in submandibular gland.CT appearances of benign masses were like as nodule (13 cases),lobulated(5 cases),irregular(3 cases).most of them appeared as sharp margin,clear boundary,isodensity.Pathologic findings:there were intact mass capsule in 18 cases,non-intact mass capsulle in 3 cases.Malignant masses on CT appeared as irregular(13 cases),blurred margin,blurred outline to adjacent structrue.Pathologic findings:most of masses had not capsule.Conclusion:The advantages in CT scan of salivary gland were as follows;located correctly demonstrated well extent of lesion and relationship between the lesion and surrouding structure as well as distinguishing benign or malignant masses based on the types and density of masses.