Article ; Online: Pathologic complete response after neoadjuvant chemotherapy/(re)chemoradiation for pelvic relapse of rectal cancer undergoing complex pelvic surgery: more frequent than expected?
International journal of colorectal disease
2022 Volume 37, Issue 10, Page(s) 2257–2261
Abstract: Purpose: To estimate the rate of pathologic complete response (pCR) after neoadjuvant chemotherapy/(re)chemoradiation and its impact on survival in locally recurrent rectal cancer (LRRC) and to identify predictors of pCR or differences between ... ...
Abstract | Purpose: To estimate the rate of pathologic complete response (pCR) after neoadjuvant chemotherapy/(re)chemoradiation and its impact on survival in locally recurrent rectal cancer (LRRC) and to identify predictors of pCR or differences between neoadjuvant treatments. Methods: Among 394 LRRC patients treated at the National Cancer Institute of Milan (Italy), 74 (27.8%) were treated with neoadjuvant chemotherapy with or without (re)chemoradiation before surgery. The pCR rate was estimated, and its impact on 5-year survival was evaluated with the Kaplan-Meier survival method. Univariate analysis was performed to find pre-treatment predictors of pCR. Results: After surgery, in 12 (16.2%) patients, a pCR was observed. All patients who reached pCR had R0 margins after surgery; among the 62 non-pCR patients, R0 margins were obtained in 29 (46.8%) cases only (p = 0.0004). pCR patients showed a significantly higher 5-year overall survival compared to non-pCR cases (33.3% vs. 21.0%, p = 0.045) and a trend toward better 5-year re-local recurrence-free survival. On univariate analysis, no predictor of pCR was found in the present study based on pre-treatment features. Conclusion: Since pCR is significantly associated to R0 resection and 5-year overall survival, pCR could be a target for LRRC cure. However, pCR is currently unpredictable based on pre-treatment features. |
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MeSH term(s) | Chemoradiotherapy/methods ; Humans ; Neoadjuvant Therapy/methods ; Neoplasm Recurrence, Local/pathology ; Neoplasm Staging ; Rectal Neoplasms/pathology ; Rectum/pathology ; Retrospective Studies ; Treatment Outcome |
Language | English |
Publishing date | 2022-10-01 |
Publishing country | Germany |
Document type | Journal Article |
ZDB-ID | 84975-3 |
ISSN | 1432-1262 ; 0179-1958 |
ISSN (online) | 1432-1262 |
ISSN | 0179-1958 |
DOI | 10.1007/s00384-022-04260-1 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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