University of the Ryukyus · Faculty of Medicine

Research keywordsliving donor liver transplantation・bile leakage complications・small for size syndrome・portal vein stenting・acute liver failure transplantation・hepatectomy risk factors

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• Clinical Significance of Grade A Small-for-size Syndrome After Living Donor Liver Transplantation Utilizing the New Definition of Diagnostic Criteria: An International Multicenter Study.2025 · Jo HS, Kim DS, Gunasekaran V, Krishnamurthy J, Toshima T, Takahashi R, Kim JY, Krishnan SK, Okumura S, Hara T, Shimata K, Haruki K, Minnee RC, Rammohan A, Gupta S, Yoshizumi T, Ikegami T, Lee KW, Rela M
• Living Donor Left Hepatectomy as a Risk Factor for Extremely Severe Bile Leakage Requiring Nonconservative Treatment: A Retrospective Analysis2025 · Kadohisa M.
• Portal vein stenting blocked the inflow tract and completely resolved bile duct varices, formed by cavernous transformation of the portal vein2024 · There is no established treatment for bleeding bile duct varices (BDVs). We report the first case of portal vein (PV) stenting completely eradicating bleeding BDVs. A 70-year-old male with malignant lymphoma developed BDVs due to PV obstruction, which had caused compression and stricture of the distal bile duct. Endoscopic retrograde cholangiography was performed to evaluate the stricture and bleeding from the ruptured BDV was observed. Endoscopic hemostasis was difficult, requiring reopening of the extra-hepatic PV and reducing the blood flow to the BDVs for hemostasis. Therefore, PV stenting was performed. During the procedure, portal angiography confirmed an inflow tract to the BDVs. Therefore, covered stents were placed in the PV and adjusted to block the inflow tract to the BDVs at the distal end. After stenting, the BDVs were successfully blocked and all PV blood flowed through the stent placed in the extra-hepatic PV. Two weeks after stenting, the BDVs had disappeared completely and the bleeding has not recurred for months. We experienced a case in which PV stenting not only reopened an obstructed PV but also successfully occluded the inflow tract. This case demonstrates the potential of PV stenting for the treatment of hemorrhagic BDVs.
• Corrigendum to 'A novel scoring system to predict short-term mortality after living donor liver transplantation for acute liver failure' American Journal of Transplantation, Available online 29 April 2024, In Press, Corrected Proof.2024 · Shimata K, Yoon YI, Hibi T, Morinaga J, Narayanan AK, Toshima T, Ito T, Akamatsu N, Kotera Y, Hong SK, Hasegawa Y, Umeda Y, Reddy MS, Ong AL, Sivaprasadan S, Varghese J, Sugawara Y, Chen CL, Nakayama N, Mochida S, Tanaka A, Suh KS, Ikegami T, Lee KW, Lee SG, Vanguard Multicenter Study of International Living Donor Liver Transplantation (iLDLT) Group

• 肝障害・再生時における好中球サブタイプの時空間的変化と変換機構の解明2023 · 若手研究

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