Rinsho Shinkeigaku (Clinical Neurology)

Case Report

Portal vein thrombosis associated with hepatic encephalopathy

Nao Iwatani, M.D.1)2), Yuichiro Inatomi, M.D.1), Toshiro Yonehara, M.D.1), Shodo Fujioka, M.D.1), Yoichiro Hashimoto, M.D.3), Teruyuki Hirano, M.D.4) and Makoto Uchino, M.D.4)

1)Stroke Center, Saiseikai Kumamoto Hospital
2)Presently, Department of Rehabilitation, Kajiki Onsen Hospital
3)Department of Neurology, Kumamoto City Hospital
4)Department of Neurology, Graduate School of Medical Sciences, Kumamoto University

A 54-year-old man who had been administered chlormadinone acetate 3 months after prostatectomy for prostate cancer, acutely developed disorientation and memory disturbance. Six days later, he experienced high grade fever and epigastralgia. He was suspected to have hepatic encephalopathy, because the Fischer ratio was low although serum ammonia level remained normal. Further examinations including abdominal echography and CT scan disclosed a thrombus extending from the portal vein to the superior mesenteric vein together with abnormal collateral vessels originating from the portal vein. He was successfully treated with warfarin potassium, urokinase and heparin sodium.
It was suggested that the patient developed hepatic encephalopathy due to portal-systemic circulation shunting secondary to portal vein thrombosis.

(CLINICA NEUROL, 45: 235|238, 2005)
key words: portal vein thrombosis, pylephlebitis, hepatic encephalopathy, portal-systemic shunting, antithrombotic therapy

(Received: 2-Aug-04)