title: Portal and mesenteric vein thrombosis after portal vein embolization in a patient with protein S deficiency.
abstract: Portal vein embolization can be performed safely, and so far no major complications have been reported. We report an extremely rare complication of portal vein embolization, a case of portal and mesenteric thrombosis in a 65-year-old patient with protein S deficiency. Right portal vein embolization was carried out prior to extended right hepatectomy for advanced gallbladder carcinoma involving the hepatic hilus. Computed tomography 14 days after embolization revealed massive thrombosis of the portal and the superior mesenteric veins. A protein S deficiency was found by means of an extensive workup for hypercoagulable state. Portal vein embolization may have triggered a cascade of events that was expressed as portal and mesenteric vein thrombosis resulting from deficiency of protein S. It may be better to determine the concentrations of such coagulation regulators prior to portal vein embolization.
authors.affiliation: Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550, Nagoya, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Ohkubo
authors.forename: Masato
authors.initials: M
authors.lastname: Nagino
authors.forename: Junichi
authors.initials: J
authors.lastname: Kamiya
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Arai
authors.forename: Hideki
authors.initials: H
authors.lastname: Nishio
authors.forename: Yuji
authors.initials: Y
authors.lastname: Nimura
mesh_terms: D000368:Aged; D004621:Embolization, Therapeutic / Q000009:adverse effects*; D005260:Female; D005706:Gallbladder Neoplasms / Q000601:surgery; D006498:Hepatectomy; D006801:Humans; D008642:Mesenteric Veins; D011169:Portal Vein / Q000000981:diagnostic imaging / Q000503:physiopathology; D018455:Protein S Deficiency / Q000150:complications*; D012039:Regional Blood Flow; D014057:Tomography, X-Ray Computed; D018608:Ultrasonography, Doppler; D020246:Venous Thrombosis / Q000000981:diagnostic imaging / Q000209:etiology*