RT Journal Article SR Electronic T1 The Sandwich Technique of Diaphragmatic Stripping or Full-Thickness Resection for Advanced Ovarian Cancer: How to Keep it Short and Simple JF International Journal of Gynecologic Cancer JO Int J Gynecol Cancer FD BMJ Publishing Group Ltd SP 131 OP 134 DO 10.1097/IGC.0000000000000309 VO 25 IS 1 A1 Christoph Grimm A1 Philipp Harter A1 Florian Heitz A1 Andreas du Bois YR 2015 UL http://ijgc.bmj.com/content/25/1/131.abstract AB Objective Residual tumor is an important prognostic factor in advanced ovarian cancer patients. A recent analysis from a large Gynecologic Oncology Group trial identified the diaphragm as the most common localization for residual tumor after surgery in advanced ovarian cancer. This stresses the need for more knowledge and training in diaphragmatic surgery in patients with advanced ovarian cancer.Methods/Materials We aimed to describe a safe structured technique to perform transection of the peritoneal diaphragm or full-thickness resection of the diaphragm.Results The structured technique consists of 5 steps as follows: (1) knowledge of anatomical landmarks, (2) adequate exposure of the surgical field, (3) mobilization of the liver, (4) demarcation of the resection lines of the peritoneum, and (5) mobilization of the diaphragmatic peritoneum by using the sandwich technique or performance of a full-thickness resection with subsequent suture.Conclusions Diaphragmatic surgery is an important part of upper abdominal surgery in advanced ovarian cancer patients. It is a safe structured procedure, which should be routinely performed to achieve optimal surgical results for these patients.