“…After that multiple studies of the accuracy of EUS published especially in insulinoma (Schumacher et al, 1996;Anderson et al, 2000;Ardengh et al, 2000;Zimmer et al, 2000;Gouya et al, 2003) with detection rate of 79-94% ,in a recent study 52 patients underwent EUS for detection of insulinoma (according to clinical and laboratory data) that sensitivity was 89.5% and accuracy of 83.7% according to surgical finding . Sensitivity of EUS for detection of lesion ns in the head, body and tail of the pancreas respectively was 92.…”