食管鳞状细胞癌病人常有吸烟史和（或）酒精中毒史，然而食管腺癌常有Barrett食管。图示胃食管交界处有性质不明的肿块，可见溃疡形成和不规则黏膜，临床表现为疼痛和吞咽困难。
A history of smoking and/or alcoholism is often present in patients with esophageal squamous carcinoma, while a history of Barrett's esophagus precedes development of esophageal adenocarcinoma in many cases. Here, an ill-defined mass at the gastroesophageal junction produces mucosal ulceration and irregularity, which led to the clinical symptoms of pain and difficulty swallowing.
