杨姓,女,42岁,本县万祥公社社员。1979年11月21日起右上腹胀,心窝部隐隐不适,食欲不振,乏力。无腹泻或便秘。10天后心慌。手足麻木。住当地卫生院。发现肝大,进行性消瘦。1980年3月起上述症状加重,伴全身肌肉阵发性颤动,进食后加重,致逐渐惧食,以至拒食6天,恶心呕吐1天,于同年4月16日入我院。有食半熟淡水螺习惯,但无食生鱼和半生鱼史。从未去过外地。体检:身高162厘米,体重65斤,消瘦,精神萎靡,皮肤干燥、弹性差。眼球稍凹陷,巩膜无黄染。心肺无异常。腹舟状,无触痛,肝肋下2厘米、剑突下5厘米、质中 Yang surname, female, 42 years old, the county Wanxiang commune members. November 21, 1979 on the right upper quadrant abdominal distension, faint appetite, loss of appetite, fatigue. No diarrhea or constipation. 10 days after the palpitation. Hand and foot numbness. Live in the local hospital. Found that large, progressive weight loss. March 1980 from the above symptoms, with systemic muscle paroxysmal fibrillation, aggravating after eating, gradually fear food, and even refused to eat 6 days, nausea and vomiting 1 day, April 16 the same year into our hospital. Fresh half-cooked freshwater snails habit, but no raw fish and half a fish history. I’ve never been to the field. Physical examination: height 162 cm, weight 65 kg, weight loss, apathetic, dry skin, poor elasticity. Slightly concave eye, sclera without yellow dye. No abnormal heart and lung. Abdominal boat, no tenderness, liver ribs 2 cm, 5 cm under the xiphoid, quality