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The extent of lymph node dissection for colon carcinoma
Author(s) -
Hida Jinichi,
Yasutomi Masayuki,
Maruyama Takamasa,
Fujimoto Kiyoshige,
Uchida Toshihiro,
Okuno Kiyotaka
Publication year - 1997
Publication title -
cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.052
H-Index - 304
eISSN - 1097-0142
pISSN - 0008-543X
DOI - 10.1002/(sici)1097-0142(19970715)80:2<188::aid-cncr3>3.0.co;2-q
Subject(s) - lymph , lymph node , medicine , dissection (medical) , metastasis , colorectal cancer , radiology , cancer , pathology
BACKGROUND The surgeon is no longer able to palpate the mesocolon for lymph node metastases during laparoscopic colectomy. The extent of lymph node dissection should be determined beforehand for cancer control. METHODS The distribution of lymph node metastases was obtained by the clearing method on colon carcinomas for 164 patients. RESULTS For pericolic spread: for pT1 tumors, the distance from the primary tumor to a metastatic lymph node was 2.5 cm; for pT2, the distance was within 5 cm; for 97.0 % of pT3 tumors with lymph node metastases, the distance was within 7 cm; for 93.3 % of pT4 tumors with lymph node metastases, the distance was within 7 cm. For central spread: for pT1 tumors, the rate of metastasis to central lymph nodes was 0 %; for pT2, the rate of metastasis was 20.0 % to intermediate lymph nodes; for pT3, the rate of metastasis was 30.6 % to intermediate lymph nodes and 15.3 % to main lymph nodes; for pT4, the rate of metastasis was 44.4 % to intermediate lymph nodes and 22.2 % to main lymph nodes. CONCLUSIONS Central lymph node dissection is not required for patients with T1 carcinomas, but proximal and distal 3‐cm margins of resection are required. For T2, central lymph node dissection that includes the intermediate lymph node should be performed, as well as 5‐cm proximal and distal margins of resection. For T3 and T4, central lymph node dissection including the main lymph node should be performed, as well as 7‐cm proximal and distal margins of resection. [See editorial on pages 177‐8, this issue.] Cancer 1997; 80:188‐92. © 1997 American Cancer Society.