Nodal spread and micrometastasis within mesorectum

AIM: To study the distribution of positive lymph nodes within mesorectum and to investigate the possible micrometastasis in negative lymph nodes. METHODS: Large slice technique combined with tissue microarray was used in the pathologic study of 31 specimens. RESULTS: A total of 992 lymph nodes were...

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Bibliographic Details
Published in:World journal of gastroenterology : WJG 2005-06, Vol.11 (23), p.3586-3590
Main Authors: Wang, Cun, Zhou, Zong-Guang, Wang, Zhao, Chen, Dai-Yun, Zheng, Yang-Chun, Zhao, Gao-Ping
Format: Article
Language:English
Subjects:
Adenocarcinoma - pathology
Adenocarcinoma - surgery
Adult
Aged
Biopsy
Brief Reports
Humans
Lymph Nodes - pathology
Lymphatic Metastasis - pathology
Middle Aged
Neoplasm Metastasis - pathology
Rectal Neoplasms - pathology
Rectal Neoplasms - surgery
Retrospective Studies
淋巴结
病理机制
直肠系膜肿瘤
肿瘤转移
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Summary:AIM: To study the distribution of positive lymph nodes within mesorectum and to investigate the possible micrometastasis in negative lymph nodes. METHODS: Large slice technique combined with tissue microarray was used in the pathologic study of 31 specimens. RESULTS: A total of 992 lymph nodes were harvested and cancer metastasis was found in 148 lymph nodes. Some positive lymph nodes were located in the outer layer of mesorectum and more at the same site of esorectum as the primary tumor. Circumferential margin lymph node metastasis was observed in nine cases. No significant difference in occurrence of micrometastasis was observed in different stage tumors. CONCLUSION: Positive lymph nodes are distributed in mesorectum and micrometastasis can be found in negative lymph nodes.
ISSN:1007-9327
2219-2840
DOI:10.3748/wjg.v11.i23.3586