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Published in: Journal of Gastrointestinal Surgery 11/2007

01-11-2007

Peritumoral Inflammatory Infiltrate is not a Prognostic Factor in Distal Rectal Cancer Following Neoadjuvant Chemoradiation Therapy

Authors: Rodrigo O. Perez, Angelita Habr-Gama, Rafael Miyashiro Nunes dos Santos, Igor Proscurshim, Fábio G. Campos, Viviane Rawet, Desiderio Kiss, Ivan Cecconello

Published in: Journal of Gastrointestinal Surgery | Issue 11/2007

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Abstract

Background

Peritumoral inflammatory response has been considered a good prognostic factor for colorectal cancer. However, this has not been evaluated in patients submitted to neoadjuvant therapy for distal rectal cancer. For this reason, we decided to study the effect of the presence of this pathological finding on disease recurrence and survival.

Methods

The peritumoral inflammatory infiltrate from recovered pathological specimens of patients operated after neoadjuvant therapy for distal rectal cancer was graded (positive or negative). Patients were compared according to the presence of peritumoral inflammatory response.

Results

Of the 168 patients, 63 (37%) patients had a peritumoral inflammatory response. The lack of peritumoral inflammatory response was significantly associated with the presence of mucinous component (13 vs 3%; p = 0.02). Five-year overall survival (91 vs 81%) and disease-free survival (57 vs 48%) were not significantly different between patients with and without peritumoral inflammatory response (p = 0.5 and 0.3, respectively).

Conclusions

Peritumoral inflammatory response is not a favorable prognostic factor in patients with distal rectal cancer after neoadjuvant chemoradiation therapy. Possibly, the immunosuppressive action of chemoradiation therapy may lead to a loss of function of the immunological response, which may represent a disadvantage of the neoadjuvant approach for the management of distal rectal cancer.
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Metadata
Title
Peritumoral Inflammatory Infiltrate is not a Prognostic Factor in Distal Rectal Cancer Following Neoadjuvant Chemoradiation Therapy
Authors
Rodrigo O. Perez
Angelita Habr-Gama
Rafael Miyashiro Nunes dos Santos
Igor Proscurshim
Fábio G. Campos
Viviane Rawet
Desiderio Kiss
Ivan Cecconello
Publication date
01-11-2007
Publisher
Springer-Verlag
Published in
Journal of Gastrointestinal Surgery / Issue 11/2007
Print ISSN: 1091-255X
Electronic ISSN: 1873-4626
DOI
https://doi.org/10.1007/s11605-007-0287-8

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