Role of endoscopic color Doppler ultrasonography in the preoperative localization of insulinomas / 中华消化内镜杂志

ABSTRACT

Objective To investigate the role of endoscopic color Doppler ultrasonography (ECDUS) in the preoperative localization of insulinomas. Methods Seven patientsd woman) with biochemically diagnosed insulinoma underwent abdominal US, spiral CT and ECDUS in an attempt to precisely localize the tumor before surgery. Surgical and pathological results were considered as the definite localization of tumor. The role of ECDUS in the preoperative localization of insulinomas was compared with that of abdominal US and spiral CT. Results Ten tumors were detected by surgery and pathology. The sensitivity of ECDUS in identifying insulinomas was 8/10 compared with 1/10 for CT and 0/10 for abdominal US. Two tumors not detected by ECDUS had a size below 0. 5cm. Conclusions ECDUS is superior to spiral CT or abdominal US, and should be served as the first choice in the detection of pancreatic isulinomas. ECDUS identification depends on the size of the tumor and 'is hard to detect the tumors smaller than 0. 5cm.