The potential causes of old rotten legs, abdominal distension and abdominal pain are: Buga syndrome (a symptom group caused by occlusion of the hepatic veins and or posterior segment of the hepatic inferior vena cava) 1. old rotten legs: mainly due to hepatic vein obstruction, manifesting as lower limb edema and varices, hyperpigmentation, chronic ulcers, lateral thoracoabdominal wall and lumbar superior superficial varices. 2, epigastric or liver pain, ascites: mainly due to hepatic vein obstruction, manifested as epigastric or liver pain, hepatosplenomegaly, ascites, upper gastrointestinal bleeding, abdominal wall veins showing, varices, etc. The methods of treatment of old rotten leg, abdominal distension and abdominal pain: 1. Minimally invasive treatment: (interventional treatment) 2.Interventional treatment: (hepatic vein balloon dilation, inferior vena cava dilation)