腮腺区新生物的CT定性诊断

目的通过与病理的对照,总结腮腺区良、恶性新生物的诊断依据.方法回顾性分析25例腮腺区新生物的CT图像,并与手术病理相对照,分析腮腺区新生物的CT表现.结果新生物呈圆形或类圆形软组织结节20例,呈不规则分叶状5例;密度均匀16例,密度不均匀9例;边缘光滑、周围脂肪间隙清晰,与周围结构分界清楚21例,边界不清、周围脂肪间隙模糊,与周围结构分界不清4例.病理证实为腮腺良性病变18例,恶性肿瘤6例,汗腺恶性肿瘤1例.CT术前诊断良性新生物正确16例(正确率84.2%),恶性新生物正确5例(正确率83.3%).结论 CT对腮腺良、恶性病变诊断的准确性较高,但对恶性肿瘤的组织类型难以确定.在对病变良、恶性鉴别方面,熟悉腮腺区解剖是基础,掌握腮腺良、恶性病变的病理特征及CT表现是关键,同时不应忽视腮腺CT强化扫描的价值.

Qualitative diagnosis of CT of neoplasm in parotid region

Objective To investigate the diagnostic evidence of CT for benign lump and malignant lump,as compared with the pathological results.Methods The CT images of neoplasm in parotid area of 25 cases were retrospectively analyzed and were compared with the pathological results.Results Circular or analogues nodular neoplasm was 20 cases;irregular lobulated neoplasm 5 cases;homogeneous density of neoplasm 16 cases;non-homogeneous density 9 cases;smooth brink,peripheric fatty clearance clearly and peripheric structure clearly 21 cases;not smooth,not clear 4 cases,and 18 cases were benign lumps verified and 6 cases were malignant,1 case was malignant of sweating gland by pathological methods and CT diagnosis before operation:benign lump 16 cases(accurate rate percent 84.2) and malignant lump 5 cases(accurate rate percent 83.3).Conclusion The accurate rate of CT diagnosis for benign and malignant lump is quite high,however,which can't be distinguished from tissue type.If we want to draw a accurate conclusion of benign or malignant lump,we should know the anatomy,pathological characteristics of parotid region and CT features at the same time,and CT intensify scanning also plays an important role in the diagnosis.