title: Right trisegment portal vein embolization for biliary tract carcinoma: technique and clinical utility.
abstract: BACKGROUND
  Right portal vein embolization has become popular in preparation for right hepatic lobectomy. However, right trisegment portal vein embolization (R3PE) is not well established.
  
  
  METHODS
  We performed R3PE in 15 patients with biliary tract carcinoma and 1 patient with primary sclerosing cholangitis. We used 2 types of 5.5 F triple-lumen balloon catheters to embolize portal branches of the right trisegment (the left medial, the right anterior, and the right posterior segments).
  
  
  RESULTS
  R3PE was successful in all patients without any complications. The calculated volume of the right lobe significantly (P < .01) decreased from 650 +/- 161 cm3 before embolization to 585 +/- 143 cm3 after embolization; the volume of the left lateral segment significantly (P < .0005) increased from 240 +/- 58 cm3 to 361 +/- 66 cm3. The volume of the left medial segment was unchanged. The volume gain of the left lateral segment was larger in patients with R3PE than in those patients (n = 41) with right portal vein embolization (122 +/- 39 cm3 vs 66 +/- 35 cm3; P < .0001). Two of the 16 patients underwent only laparotomy because of peritoneal dissemination, and the remaining 14 patients underwent right hepatic trisegmentectomy with caudate lobectomy. In addition, portal vein resection was also performed in 5 patients, and pancreatoduodenectomy and right hemicolectomy was performed in 3 patients. One patient died of posthepatectomy liver failure 87 days after surgery, a mortality rate of 7.1% (1/14 patients).
  
  
  CONCLUSIONS
  R3PE is more useful than standard right portal vein embolization in preparation for right hepatic trisegmentectomy and has the potential to increase the safety of this high-risk surgery for patients with biliary tract carcinoma.
authors.affiliation: 1st Department of Surgery, Nagoya University School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Nagino
authors.forename: J
authors.initials: J
authors.lastname: Kamiya
authors.forename: M
authors.initials: M
authors.lastname: Kanai
authors.forename: K
authors.initials: K
authors.lastname: Uesaka
authors.forename: T
authors.initials: T
authors.lastname: Sano
authors.forename: H
authors.initials: H
authors.lastname: Yamamoto
authors.forename: N
authors.initials: N
authors.lastname: Hayakawa
authors.forename: Y
authors.initials: Y
authors.lastname: Nimura
mesh_terms: D000328:Adult; D000368:Aged; D001650:Bile Duct Neoplasms / Q000601:surgery; D001653:Bile Ducts, Intrahepatic; D001661:Biliary Tract Neoplasms / Q000601:surgery*; D018281:Cholangiocarcinoma / Q000601:surgery; D015209:Cholangitis, Sclerosing / Q000601:surgery; D004621:Embolization, Therapeutic / Q000295:instrumentation / Q000379:methods; D005260:Female; D005706:Gallbladder Neoplasms / Q000601:surgery; D006498:Hepatectomy; D006801:Humans; D008099:Liver / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011169:Portal Vein; D011183:Postoperative Complications; D011300:Preoperative Care