title: How we do it: double in situ split for staged mesohepatectomy in patients with advanced gall bladder cancer and marginal future liver remnant.
abstract: OBJECTIVE
  Associating liver partition with portal vein ligation for staged hepatectomy (ALPPS) has increased the rate of liver resections in patients with marginal future liver remnant. We here describe a modified ALPPS procedure with splitting-off the central liver segments for staged mesohepatectomy in patients with advanced gall bladder cancer.
  
  
  METHODS
  A double in situ split for ALPPS (DALPPS) is performed with splitting-off the central liver segments (segments 1, 4, 5, and 8). This induces a rapid hypertrophy of the left lateral (segments 2/3) and right posterior sectors (segments 6/7). An intrahepatic right posterior approach during splitting-off the right posterior sector is introduced as a part of this new procedure. This approach facilitates the dissection and ligation of the right anterior branch of the portal vein (segments 5 and 8) while the liver hilum remains untouched during the first step of surgery.
  
  
  RESULTS
  Two patients with advanced gall bladder cancer were treated with the DALPPS procedure till date. After a short interval (7-9 days), a rapid hypertrophy of the left lateral and right posterior sector was observed (hypertrophy up to 72.6 and 54.6 %, respectively). A staged mesohepatectomy including caudate lobectomy and resection of the extrahepatic bile duct was then performed safely. There was no surgical-technical morbidity. No signs of posthepatectomy liver failure according to the 50-50 criteria were seen. However, one patient died from severe ARDS attributed to the preoperative chemotherapy. Nevertheless, this complication is deemed to be surgery related.
  
  
  CONCLUSIONS
  The DALPPS procedure is a new surgical technique for staged mesohepatectomy for patients with small future liver remnant in size or in function. However, appropriate patient selection is mandatory to avoid morbidity and mortality.
authors.affiliation: Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. tytsui@gmail.com.|Division of Oncologic Surgery, Hepatobiliary and Transplant Surgery, Department of Surgery, University Medical Center Rostock, Rostock, Germany. tytsui@gmail.com.|Department of Surgery, University Medical Center Rostock, Schillingallee 35, Rostock, Germany. tytsui@gmail.com.
authors.forename: Tung Yu
authors.initials: TY
authors.lastname: Tsui
authors.affiliation: Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
authors.forename: Asmus
authors.initials: A
authors.lastname: Heumann
authors.affiliation: Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
authors.forename: Yogesh K
authors.initials: YK
authors.lastname: Vashist
authors.affiliation: Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
authors.forename: Jakob R
authors.initials: JR
authors.lastname: Izbicki
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000473:pathology / Q000601:surgery*; D005260:Female; D005706:Gallbladder Neoplasms / Q000473:pathology / Q000601:surgery*; D006498:Hepatectomy / Q000379:methods*; D006801:Humans; D008026:Ligation; D008875:Middle Aged
keywords: ALPPS; Gall bladder cancer; In situ split; Mesohepatectomy