2Jemal A, Siegel R, Ward E, et al. Cancer Statistics,2007 [J]. CA Cancer J Clin,2007,57( 1 ) :43 -66.
3Okamoto M, Shiratori Y, Yamaji Y, et al. Relationship between age and site of colorectal cancer based on colonoscopy findings [ J ]. Gastrointest Endose ,2002,55 ( 4 ) : 548 - 551.
4Vironen JH, Sainio P, Husa AI, et al. Complications and survival after surgery for rectal cancer in patients younger than and aged 75 years or older[J]. Dis Colon Rectum, 2004,47 (7) : 1225 - 1231.
5Lemmens VE, Janssen-Heijnen ML, Verheij CD, et al. Co-morbidity leads to altered treatment and worse survival of elderly patients with colorectal cancer [ J ]. Br J Surg, 2005,92 ( 5 ) :615 - 623.
6Neugut AI, Fleischauer AT, Sundararajan V, et al. Use of adjuvant chemotherapy and radiation therapy for rectal cancer among the elderly : a population-based study [J]. J Clin Oncol, 2002,20 ( 11 ) :2643 - 2650.
7Arai T,Sawabe M,Takubo K,et al. Multiple colorectal cancers in the elderly: a retrospective study of both surgical and autopsy cases [J]. J Gastroenterol,2001,36 ( 11 ) :748 - 752.
8Colorectal Cancer Collaborative Group. Surgery for colorectal cancer in elderly patients: a systematic review [ J ]. Lancet,2000, 356 (9234) :968 - 974.
9Chiappa A, Zbar AP, Bertani E, et al. Surgical treatment of advanced colorectal cancer in the elderly [ J ]. Chir Ital, 2005,57 (5) :589 - 596.
10Isobe H, Takasu N, Mizutani M, et al. Management of colorectal cancer in elderly patients over 80 years old [J]. Nippon Ronen Igakkai Zasshi ,2007,44 ( 5 ) :599 - 605.
8TomioArai,Motoji Sawabe,Kaiyo Takubo,et al.Multiple colorectal cancers in the elderly:a retrospective study of both surgical and autopsy cases[J].Journal of Gastroenterology,2001,36(11):22.
9Jaana H,Vironen MD,Peter Sainio MD,et al.Complications and Survival After Surgery for Rectal Cancer in Patients Younger Than and Aged 75 Years or Older[J].Diseases of the Colon & Rectum,2004,47(7):22.