胰岛素瘤的术前及术中定位诊断方法的探讨

目的 探讨胰岛素瘤术前、术中定位方法的诊断价值,以提高胰岛素瘤定位的准确性.方法 对75例经手术病理证实的胰岛素瘤患者术前B超、CT、MRI的定位资料进行分析,统计术中触诊、术中超声(IOUS)等方法对胰岛素瘤的定位诊断准确率,并进行总结分析.结果 术前B超检查75例,23例发现肿瘤,诊断正确率30.7%;CT检查60例,24例发现肿瘤,诊断正确率40.0%;行MRI 48例,22例发现肿瘤,诊断正确率为45.8%.而术中扪诊、IOUS定位准确率分别为80.4%和96.4%术中定位率比术前明显提高.结论 胰岛索瘤的术前定位诊断比较困难,术中探查和术中B超检查的准确性很高,可不必强调术前准确定位和多种影像学重复检查.

Diagnostic value of pre-operative and intra-operative insulinomas localization

Objective To investigate the clinical significance of pre-operative ancl intra-operative insulinomas localization, and improve the diagnostic accuracy. Methods 75 patients with suspected insulinomas who were treated surgically were enrolled; all the patients had pathological evidence of insulinomas. The data of pre-operative ultrasound, CT, MRI and intra-operative ultrasound and surgical palpation were collected and analyzed. Results The sensitivity of localization procedures was as follows: ultrasonography 30.7% ( 23/75 ), CT 40.0% (24/60) , MRI 45.4% ( 22/48 ) , while surgical palpation was 80.4% , intra-operative ultrasound 96.4%. The accuracy of intra-operative procedures was higher than that of pre-operative procedures. Conclusions It was difficult to accurately localize insulinomas before operation, but intra-operative palpation and iutra-operative US was easy to perform and highly accurate. Therefore, too much emphasis should not be placed on pre-operative imaging tests.