THE ASSESSMENT OF LOCALITIVE METHODS IN INSULINOMAS

Objective\ To detect all methods of localization in the insulinomas,and promote the rate of localization in insulinomas.Methods\ Between April 1990 and April 1999,28 patients of insulinomas that confirmed by operation and pathology.US,CT,MRI and DSA were used for preoperative diagnosis,IOUS,PVS and touching were used for intraoperative diagnosis,and analyzed the results of operation.Results\ The rates of localization were 28.6% with US,32.2% with CT,41.7% with MRI,50.0% with DSA,82.1% with touching,and 92.3% with IOUS and PVS.The rates of preoperative were higher than that intraoperative.Conclusion\ The rates of localization were so lower in preoperative diagnosis that did not be detected repeatedly,but intraoperative diagnosis was very vital.IOUS not only to promote the localizative sensitivity,but also to discrease the rates of operative complication.