患者男性，48岁。因进行性吞咽困难一月入院，于入院前一月余每当进食后即出现噎嗝不止，并渐觉进食时胸骨后有不适感及隐痛，不伴恶心呕吐及黑便等。近一月吞咽困难进行性加重而往院治疗。患者自患病以来食欲明显下降，近日几乎未进食，体重下降6－7公斤。患者有吸烟及饮酒三? The patient is male, 48 years old. Due to progressive dysphagia, admitted to hospital in January, there was more than one episode every time I was admitted to the hospital one month before admission. I felt uncomfortable and painful after the sternum, and I was not accompanied by nausea, vomiting and black stools. Dysphagia was progressively worsened in the previous month and went to hospital for treatment. The patient’s appetite has decreased significantly since she became ill. She has barely eaten in recent days and has lost 6-7 kg of body weight. Patients have smoking and drinking three?