患者男，５７岁。因左上腹包块２年，腹胀、消瘦、乏力１月入院。两年前患者发现左上腹核桃大小包块，渐增大；近一年感腹胀、纳差、精神萎靡和消瘦，但无肝区疼痛和发热，大小便正常。外院拟为左肝内实质性占位性病变转入本院。自述无肝病史。查体：贫血外貌。呼吸、脉搏... Male patient, 57 years old. Due to left upper abdomen mass for 2 years, abdominal distention, weight loss and fatigue were admitted to hospital in January. Two years ago, patients found that the size of the upper left abdomen was gradually increasing. In the past year, abdominal distension, anorexia, apathy, and weight loss were felt. However, there was no liver area pain and fever, and the urine was normal. The hospital intends to transfer to the hospital a substantial occupying lesion in the left liver. Self-reported history of liver disease. Physical examination: anemia appearance. Breathing, pulse...