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01-08-2005 | Original Article

Patterns of neoplastic foci and lymph node micrometastasis within the mesorectum

Authors: Cun Wang, Zongguang Zhou, Zhao Wang, Yangchun Zheng, Gaoping Zhao, Yongyang Yu, Zhong Cheng, Daiyun Chen, Weiping Liu

Published in: Langenbeck's Archives of Surgery | Issue 4/2005

Abstract

Background and aims

Local recurrence after rectal cancer surgery is conceived to result from microscopically incomplete resection. We aimed to investigate the patterns of mesorectal neoplastic foci, and examined the involvement and micrometastasis of lymph nodes.

Methods

Observation of large tissue slice and analysis of tissue microarray were integrated in the pathological study of 31 total mesorectal excision (TME) specimens.

Results

Altogether, 349 mesorectal neoplastic foci were examined from 18 specimens. Almost 33% of them were in the outer layer of mesorectum. Concerning position of primary tumor, ipsilateral neoplastic foci were significantly more than contralateral neoplastic foci. Distal mesorectal spread was found in four patients with the distance ranging from 1 to 3.5 cm. Four specimens were diagnosed to have circumferential margin involved. Nine hundred seventy-two lymph nodes were harvested with 128 involved by tumor. No significant difference in occurrence of micrometastasis was observed among tumors of different stage.

Conclusions

Combination of large tissue slice and tissue microarray provided a more detailed method in studying the metastasis of rectal cancer. Complete excision of the mesorectum with fascia propria circumferentially intact is essential. Circumferential margin involvement and micrometastasis suggested that tumor spread may go beyond the scope of a single TME procedure.

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Title: Patterns of neoplastic foci and lymph node micrometastasis within the mesorectum
Authors: Cun Wang
Zongguang Zhou
Zhao Wang
Yangchun Zheng
Gaoping Zhao
Yongyang Yu
Zhong Cheng
Daiyun Chen
Weiping Liu
Publication date: 01-08-2005
Publisher: Springer-Verlag
Published in: Langenbeck's Archives of Surgery / Issue 4/2005
Print ISSN: 1435-2443
Electronic ISSN: 1435-2451
DOI: https://doi.org/10.1007/s00423-005-0562-7

ACC 2024 Congress

Springer Medicine

Patterns of neoplastic foci and lymph node micrometastasis within the mesorectum

Abstract

Background and aims

Methods

Results

Conclusions

ACC 2024 Congress

Springer Medicine

Abstract

Background and aims

Methods

Results

Conclusions

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