title: Endoscopic retroperitoneal adrenalectomy.
abstract: BACKGROUND
  The anterior transabdominal approach for adrenalectomy is associated with a longer postoperative recovery period than a posterior extraperitoneal adrenalectomy. The posterior approach is useful for patients requiring bilateral adrenalectomy or in those undergoing unilateral adrenalectomy for benign adenomas smaller than 5 cm. Recently transabdominal laparoscopic adrenalectomy has been used in patients with adrenal tumors. Endoscopic retroperitoneal adrenalectomy (ERA) is an alternative method that provides excellent exposure and should be associated with less postoperative morbidity.
  
  
  METHODS
  Between 1993 and 1994 11 ERAs were performed in eight patients in the Department of Surgery, Istanbul Faculty of Medicine. The patients were placed in the prone semijackknife position on the operating table. After the retroperitoneal space was expanded with a balloon trochar, four 10 mm trochars were placed to perform the procedure.
  
  
  RESULTS
  Among the eight female patients 23 to 65 years of age (mean, 42 +/- 12.4 years), three had bilateral adrenal hyperplasia caused by Cushing's disease, three patients had functioning adenoma, one patient had nonfunctioning adenoma (three on right and one on left adrenal), and one patient had right adrenal cyst. The mean operation time was 150 minutes (range, 90 to 300 minutes). No changes in PCO2 values have been found during intraoperative blood gas analyses. No intraoperative or postoperative complications occurred. All patients were discharged on the third postoperative day.
  
  
  CONCLUSIONS
  ERA is a new and safe method of adrenalectomy. It is less invasive than the posterior approach. Patients treated by ERA seem to experience less postoperative pain and discomfort and have a shorter postoperative hospitalization and recovery period.
mesh_terms: D000236:Adenoma / Q000601:surgery; D000310:Adrenal Gland Neoplasms / Q000601:surgery; D000311:Adrenal Glands / Q000473:pathology; D000315:Adrenalectomy / Q000379:methods*; D000328:Adult; D002245:Carbon Dioxide / Q000097:blood; D003480:Cushing Syndrome / Q000601:surgery; D004724:Endoscopy; D005260:Female; D006801:Humans; D006965:Hyperplasia / Q000601:surgery; D007431:Intraoperative Complications; D008875:Middle Aged; D011183:Postoperative Complications; D012187:Retroperitoneal Space
chemical_list: D002245:Carbon Dioxide