Clinical implications of lymph node micrometastases in patients with colorectal cancers. A case control study

Yukihiro Nakanishi, Atsushi Ochiai, Yuko Yamauchi, Yoshihiro Moriya, Kimio Yoshimura, Setsuo Hirohashi

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

There is no unanimity about the prognostic significance of lymph node micrometastases from colorectal cancer. A case-control study of patients with recurrent and nonrecurrent colorectal cancer who were closely matched for the Dukes stage, extent of lymph node dissection, tumor size, tumor location, number of resected lymph nodes, age and gender was performed. The presence of micrometastases in a total of 1633 lymph nodes from 44 patients (22 with and 22 without recurrence) were examined by immunohistochemistry using antibodies for cytokeratin (KL-1) and p53 (RSP53). Immunostaining with KL-1 revealed micrometastases in 15/22 patients [68%; 82/820 lymph nodes (10%)] and 15/22 patients [68%; 45/813 lymph nodes (6%)] in the recurrent and nonrecurrent groups, respectively. Immunohistochemical analysis, using RSP53, of 18 paired patients with p53-positive primary tumor revealed micrometastases in 4/9 patients [44%; (7/265 lymph nodes (2.6%)] and 4/9 patients [44%; 6/257 lymph nodes (2.3%)] with and without recurrence, respectively. Neither the micrometastatic frequencies of the patients nor the resected lymph nodes of the recurrent and nonrecurrent groups differed significantly. Micrometastases in regional lymph nodes are an interesting phenomenon, but do not influence patients' prognoses if the involved lymph nodes are removed.

Original languageEnglish
Pages (from-to)276-280
Number of pages5
JournalOncology
Volume57
Issue number4
Publication statusPublished - 1999 Nov
Externally publishedYes

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Neoplasm Micrometastasis
Case-Control Studies
Colorectal Neoplasms
Lymph Nodes
Recurrence
Neoplasms
Keratins
Lymph Node Excision
Immunohistochemistry

Keywords

  • Case-control study
  • Colorectal cancer
  • Immunohistochemistry
  • Micrometastasis

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Nakanishi, Y., Ochiai, A., Yamauchi, Y., Moriya, Y., Yoshimura, K., & Hirohashi, S. (1999). Clinical implications of lymph node micrometastases in patients with colorectal cancers. A case control study. Oncology, 57(4), 276-280.

Clinical implications of lymph node micrometastases in patients with colorectal cancers. A case control study. / Nakanishi, Yukihiro; Ochiai, Atsushi; Yamauchi, Yuko; Moriya, Yoshihiro; Yoshimura, Kimio; Hirohashi, Setsuo.

In: Oncology, Vol. 57, No. 4, 11.1999, p. 276-280.

Research output: Contribution to journalArticle

Nakanishi, Y, Ochiai, A, Yamauchi, Y, Moriya, Y, Yoshimura, K & Hirohashi, S 1999, 'Clinical implications of lymph node micrometastases in patients with colorectal cancers. A case control study', Oncology, vol. 57, no. 4, pp. 276-280.
Nakanishi, Yukihiro ; Ochiai, Atsushi ; Yamauchi, Yuko ; Moriya, Yoshihiro ; Yoshimura, Kimio ; Hirohashi, Setsuo. / Clinical implications of lymph node micrometastases in patients with colorectal cancers. A case control study. In: Oncology. 1999 ; Vol. 57, No. 4. pp. 276-280.
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