2Moran MR, James EC, Rothenberger DA, et al. Prognostic valve of positive lymphnodes in rectal cancer. Dis Colon Rectum,1992,35(6) :579 ～581.
3Kikuchi R, Takano M, Takagi K, et al. Management of early invasive colorectalcancer. Risk of recurrence and clinical guidelines. Dis Colon Rectum,1995,38(12):1286 ～1295.
4Kalezic V, Bjelovc M, Petrovic M, et al. Discriminant analysis of preandintraoperatively detected prognostic factors influencing lymphnode involvement in patientswith colorectal carcinoma. Hepatogas troenterology,1998,45 (20):439 ～444.
5Kotanagi H, Fukuoka T, Shibata Y, et al. The size of reginal lymph nodes does notcorrelate with the presence or absence of metastasis in lymph nodes in rectal cancer. JSurg Oncol,1993,54(4) :252 ～254.
