title: [Is preoperative localization of insulinomas necessary?].
abstract: OBJECTIVE
  To appreciate the impact of preoperative localization in surgical treatment of insulinomas.
  
  
  METHODS
  From 1986 to 2001, 29 patients were surgically treated for suspected insulinoma. Preoperative imaging assessment was performed in 26 patients: ultrasonography (n = 21), computed tomography (n = 23), endoscopic ultrasonography (n = 13), intraoperative ultrasonography (n = 22) (2 of them under laparoscopic approach).
  
  
  RESULTS
  The sensibility of the localization procedures was as follows: ultrasonography = 9.6%, computed tomography = 39%, endoscopic ultrasonography = 92.3%, surgical exploration 79.3%, intraoperative ultrasonography 86.3%. The sensibility of intraoperative palpation associated which intraoperative ultrasonography was 100%. Surgical procedures included: 11 enucleations, 10 segmental resections of the tail, 1 left pancreatectomy, 3 median pancreatectomies, 4 subtotal pancreatectomies. There was no postoperative mortality and postoperative morbidity rate was 17%, including 4 pancreatic leakages. Histological examination found solitary tumor in 22 patients (1 of them was a malignant tumor), multiple tumors (MEN 1) in 4 patients and factitious hypoglycemia in 3 patients. All the insulinomas were resected.
  
  
  CONCLUSIONS
  Intraoperative evaluation of the pancreas with intraoperative ultrasonography was associated which a right localization in 100% of insulinomas. The place for preoperative imaging seems to be limited. A laparoscopic approach in sporadic insulinomas could modify this attitude.
authors.affiliation: Service de chirurgie, hôpital de l'Antiquaille, 1, rue de l'Antiquaille, 69321 Lyon, France.
authors.forename: J Y
authors.initials: JY
authors.lastname: Mabrut
authors.forename: J C
authors.initials: JC
authors.lastname: Lifante
authors.forename: S
authors.initials: S
authors.lastname: Cherki
authors.forename: S
authors.initials: S
authors.lastname: Sin
authors.forename: N
authors.initials: N
authors.lastname: Berger
authors.forename: J L
authors.initials: JL
authors.lastname: Peix
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019160:Endosonography; D005260:Female; D006801:Humans; D007340:Insulinoma / Q000000981:diagnostic imaging / Q000601:surgery*; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D010180:Pancreatectomy / Q000379:methods*; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery*; D011300:Preoperative Care; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed
vernacular_title: La localisation préopératoire des insulinomes est-elle utile?