6[5]Justin TG,Gordon LK.The incidence. management.and outcome of pa tients with gastrointestinal carcinoids and second primary malignancies. Am Coll Surg,1995,180:427～ 432.
7[7]Rossella F,Luca R.Frequency and clinical features of multiple tumors of the large bowel in the general. population and in patients with hereditary colorectal crcinoma.Cancer,1996,77(10):2013～ 2021.
8Warren S,Gates O.Multiple primary malignant tumors:Survey of the literature and statistical study[J].Am J Cancer,1932,16:1 358-1414.
10Kaibara N,Koga S,Jinnai D.Synchronous and metachronous malignancies of the colon and rectum in Japan with special reference to a coexisting early cancer[J].Cancer,1984,54 (9):1 870-1 874.
