Portosystemic myelopathy: spastic paraparesis after portosystemic shunting

Scandinavian Journal of Gastroenterology
Harold O ConnFranz X Glocker

Abstract

Portosystemic encephalopathy (PSE) is a well-known, common complication of portal hypertension. It is thought to be caused by nitrogenous substances such as ammonia, which are normally cleared from the blood stream by the liver. In cirrhosis and other hepatic disorders with portosystemic shunting (PSS)-- either surgical portosystemic anastomoses (PSA) or spontaneous PSS-- the collateral vessels bypass the liver allowing the accumulation of toxic, ammoniacal substances in the blood and tissues. PSE is characterized by encephalopathy; portosystemic myelopathy (PSM) is characterized by paresis of the extremities, Babinski signs and muscle spasticity in patients with cirrhosis and/or PSS. Usually only the lower extremities are involved. This report presents the first case of this syndrome observed 5 years after a transjugular intrahepatic portosystemic shunt. The 31 year old man with chronic Hepatitis B developed complete spastic paraparesis within 4 weeks after onset of clinical/neurological symptoms, accompanied by an episode of severe hepatic encephalopathy. The transcortical magnetic stimulation showed normal motoric stimulation times to the abductor digiti minimi muscles but no stimulation to the tibialis muscles was seen. Lum...Continue Reading

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