Pathologic examination of lymph nodes in patients with cancer remains crucial for postoperative treatment and prognosis prediction. In this article, the authors aim to review several important and challenging issues regarding lymph node metastasis in colorectal cancer using the AJCC staging manual, College of American Pathologists cancer protocol, as well as the literature. These topics include lymph node staging, the definition and controversies in tumor deposits, isolated tumor cells in lymph node and micrometastasis, lymph node ratio as a prognostic stratification factor, and neoadjuvant treatment effect in rectal cancer. Updates from the most recent AJCC 8th edition are included.
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Natl Kyushu Med Ctr, Clin Res Inst, Chuo Ku, Fukuoka 8108563, Japan
Natl Kyushu Med Ctr, Dept Surg, Chuo Ku, Fukuoka 8108563, JapanNatl Kyushu Med Ctr, Clin Res Inst, Chuo Ku, Fukuoka 8108563, Japan
Ikeda, Yoichi
Kishihara, Fumiaki
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Natl Kyushu Med Ctr, Clin Res Inst, Chuo Ku, Fukuoka 8108563, Japan
Natl Kyushu Med Ctr, Dept Surg, Chuo Ku, Fukuoka 8108563, JapanNatl Kyushu Med Ctr, Clin Res Inst, Chuo Ku, Fukuoka 8108563, Japan
Kishihara, Fumiaki
Saitsu, Hideki
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Natl Kyushu Med Ctr, Clin Res Inst, Chuo Ku, Fukuoka 8108563, Japan
Natl Kyushu Med Ctr, Dept Surg, Chuo Ku, Fukuoka 8108563, JapanNatl Kyushu Med Ctr, Clin Res Inst, Chuo Ku, Fukuoka 8108563, Japan
Saitsu, Hideki
Saku, Motonori
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Natl Kyushu Med Ctr, Clin Res Inst, Chuo Ku, Fukuoka 8108563, Japan
Natl Kyushu Med Ctr, Dept Surg, Chuo Ku, Fukuoka 8108563, JapanNatl Kyushu Med Ctr, Clin Res Inst, Chuo Ku, Fukuoka 8108563, Japan
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Saitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, JapanSaitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, Japan
Ishida, Hideyuki
Ishibashi, Keiichiro
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Saitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, JapanSaitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, Japan
Ishibashi, Keiichiro
Ohsawa, Tomonori
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Saitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, JapanSaitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, Japan
Ohsawa, Tomonori
Okada, Norimichi
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Saitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, JapanSaitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, Japan
Okada, Norimichi
Kumamoto, Kensuke
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Saitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, JapanSaitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, Japan
Kumamoto, Kensuke
Haga, Norihiro
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Saitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, JapanSaitama Med Univ, Saitama Med Ctr, Dept Digest Tract & Gen Surg, Kawagoe, Saitama 3508550, Japan