１病例患者,男,６０岁,中上腹不适伴进食梗噎、呕吐４ｍｏｎ。既往无胃病、肠炎史。发病前未使用任何药物,无放射线接触史。体检:营养状况一般,消瘦,皮肤及巩膜无黄染,心肺（-）,腹软,肝脾肋缘下未触及,未扪及肿块,腹水征（-）。消化道钡餐检查提示食道下端管腔狭窄,管壁不规则 1 case of patients, male, 60 years old, middle and upper abdominal discomfort with eating stool, vomiting 4mon. Past no stomach disease, history of enteritis. Before the onset of any drug, no history of radiation exposure. Physical examination: general nutritional status, weight loss, skin and sclera no yellow dye, cardiopulmonary (-), abdomen soft, liver and spleen rib edge untreated, palpable mass, signs of ascites (-). Barium meal examination of the digestive tract prompted lumen stenosis, irregular wall