[Is "blind left-pancreatic resection" for insulinoma still indicated?].

One of the main problems encountered in the surgical treatment of insulinoma is that of locating them within the pancreas, since about 10% of these tumors are occult. Modern pre- and intraoperative methods of identifying of hormone-producing pancreatic tumors remove the need for 'blind resection'. Complete exploration of the pancreas, biopsy, intraoperative toluidin-blue-0 staining, glucose monitoring, and especially selective pancreatic venous blood sampling with insulin radioimmunoassay make it possible to locate nearly all tumors. Percutaneous transhepatic portal venography and selective portal blood sample collection for insulin analyses should be done routinely before planning a reintervention when organic hyperinsulinism persists.