4Kuwano H,Morita M,Tsutsui S,et al.Comparison of characteristicsof esophageal squamous cell carcinoma associated with head and neck cancer and those with gastric cancer[J].J Surg Oncol,1991,46:107-109.
5Van-Gelderen-WF.Simultaneous detection of esophageal and gastric carainomas[J].Abdom Imaging,1995,20 (4):299-301.
6Koide N,Yazawa K,Koide S,et al.Oesophageal cancer associated other primary cancers:a study of 51 patients[J].J Gastroenterol-Hepatol,1997,12 (9-10):690-694.
7Koide N,Adachi W,Koilke S,et al.Synchronous gastric tumors associated with esophageal cancer:a retrospective study of twenty four patients[J].Am J Gastroenterol,1998,93 (5):758-762.
