Preoperative staging of rectal cancer with MRI: correlation with pathologic staging
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Coloproctology (Rio de Janeiro. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2237-93632015000200077 |
Resumo: | Introduction: An accurate preoperative rectal cancer staging is crucial to the correct management of the disease. Despite great controversy around this issue, pelvic magnetic resonance (RM) is said to be the imagiologic standard modality. This work aimed to evaluate magnetic resonance accuracy in preoperative rectal cancer staging comparing with the anatomopathological results. Methods: We calculated sensibility, specificity, positive (VP positive) and negative (VP negative) predictive values for each T and N. We evaluated the concordance between both methods of staging using the Cohen weighted K (Kw), and through ROC curves, we evaluated magnetic resonance accuracy in rectal cancer staging. Results: 41 patients met the inclusion criteria. We achieved an efficacy of 43.9% for T and 61% for N staging. The respective sensibility, specificity, positive and negative predictive values are 33.3%, 94.7%, 33.3% and 94.7% for T1; 62.5%, 32%, 37.0% and 57.1% for T2; 31.8%, 79%, 63.6% and 50% for T3 and 27.8%, 87%, 62.5% and 60.6% for N. We obtained a poor concordance for T and N staging and the anatomopathological results. The ROC curves indicated that magnetic resonance is ineffective in rectal cancer staging. Conclusion: Magnetic resonance has a moderate efficacy in rectal cancer staging and the major difficulty is in differentiating T2 and T3. |
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Preoperative staging of rectal cancer with MRI: correlation with pathologic stagingRectal cancerPelvic magnetic resonanceAccuracy Sensibility Specificity Introduction: An accurate preoperative rectal cancer staging is crucial to the correct management of the disease. Despite great controversy around this issue, pelvic magnetic resonance (RM) is said to be the imagiologic standard modality. This work aimed to evaluate magnetic resonance accuracy in preoperative rectal cancer staging comparing with the anatomopathological results. Methods: We calculated sensibility, specificity, positive (VP positive) and negative (VP negative) predictive values for each T and N. We evaluated the concordance between both methods of staging using the Cohen weighted K (Kw), and through ROC curves, we evaluated magnetic resonance accuracy in rectal cancer staging. Results: 41 patients met the inclusion criteria. We achieved an efficacy of 43.9% for T and 61% for N staging. The respective sensibility, specificity, positive and negative predictive values are 33.3%, 94.7%, 33.3% and 94.7% for T1; 62.5%, 32%, 37.0% and 57.1% for T2; 31.8%, 79%, 63.6% and 50% for T3 and 27.8%, 87%, 62.5% and 60.6% for N. We obtained a poor concordance for T and N staging and the anatomopathological results. The ROC curves indicated that magnetic resonance is ineffective in rectal cancer staging. Conclusion: Magnetic resonance has a moderate efficacy in rectal cancer staging and the major difficulty is in differentiating T2 and T3. Sociedade Brasileira de Coloproctologia2015-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2237-93632015000200077Journal of Coloproctology (Rio de Janeiro) v.35 n.2 2015reponame:Journal of Coloproctology (Rio de Janeiro. Online)instname:Sociedade Brasileira de Coloproctologia (SBCP)instacron:SBCP10.1016/j.jcol.2015.02.005info:eu-repo/semantics/openAccessAbreu,Soraia Filipa MacadoMartins,Sandra Fátima Fernandeseng2015-07-16T00:00:00Zoai:scielo:S2237-93632015000200077Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=2237-9363&lng=pt&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||sbcp@sbcp.org.br2317-64232237-9363opendoar:2015-07-16T00:00Journal of Coloproctology (Rio de Janeiro. Online) - Sociedade Brasileira de Coloproctologia (SBCP)false |
dc.title.none.fl_str_mv |
Preoperative staging of rectal cancer with MRI: correlation with pathologic staging |
title |
Preoperative staging of rectal cancer with MRI: correlation with pathologic staging |
spellingShingle |
Preoperative staging of rectal cancer with MRI: correlation with pathologic staging Abreu,Soraia Filipa Macado Rectal cancer Pelvic magnetic resonance Accuracy Sensibility Specificity |
title_short |
Preoperative staging of rectal cancer with MRI: correlation with pathologic staging |
title_full |
Preoperative staging of rectal cancer with MRI: correlation with pathologic staging |
title_fullStr |
Preoperative staging of rectal cancer with MRI: correlation with pathologic staging |
title_full_unstemmed |
Preoperative staging of rectal cancer with MRI: correlation with pathologic staging |
title_sort |
Preoperative staging of rectal cancer with MRI: correlation with pathologic staging |
author |
Abreu,Soraia Filipa Macado |
author_facet |
Abreu,Soraia Filipa Macado Martins,Sandra Fátima Fernandes |
author_role |
author |
author2 |
Martins,Sandra Fátima Fernandes |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Abreu,Soraia Filipa Macado Martins,Sandra Fátima Fernandes |
dc.subject.por.fl_str_mv |
Rectal cancer Pelvic magnetic resonance Accuracy Sensibility Specificity |
topic |
Rectal cancer Pelvic magnetic resonance Accuracy Sensibility Specificity |
description |
Introduction: An accurate preoperative rectal cancer staging is crucial to the correct management of the disease. Despite great controversy around this issue, pelvic magnetic resonance (RM) is said to be the imagiologic standard modality. This work aimed to evaluate magnetic resonance accuracy in preoperative rectal cancer staging comparing with the anatomopathological results. Methods: We calculated sensibility, specificity, positive (VP positive) and negative (VP negative) predictive values for each T and N. We evaluated the concordance between both methods of staging using the Cohen weighted K (Kw), and through ROC curves, we evaluated magnetic resonance accuracy in rectal cancer staging. Results: 41 patients met the inclusion criteria. We achieved an efficacy of 43.9% for T and 61% for N staging. The respective sensibility, specificity, positive and negative predictive values are 33.3%, 94.7%, 33.3% and 94.7% for T1; 62.5%, 32%, 37.0% and 57.1% for T2; 31.8%, 79%, 63.6% and 50% for T3 and 27.8%, 87%, 62.5% and 60.6% for N. We obtained a poor concordance for T and N staging and the anatomopathological results. The ROC curves indicated that magnetic resonance is ineffective in rectal cancer staging. Conclusion: Magnetic resonance has a moderate efficacy in rectal cancer staging and the major difficulty is in differentiating T2 and T3. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2237-93632015000200077 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2237-93632015000200077 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/j.jcol.2015.02.005 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Coloproctologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Coloproctologia |
dc.source.none.fl_str_mv |
Journal of Coloproctology (Rio de Janeiro) v.35 n.2 2015 reponame:Journal of Coloproctology (Rio de Janeiro. Online) instname:Sociedade Brasileira de Coloproctologia (SBCP) instacron:SBCP |
instname_str |
Sociedade Brasileira de Coloproctologia (SBCP) |
instacron_str |
SBCP |
institution |
SBCP |
reponame_str |
Journal of Coloproctology (Rio de Janeiro. Online) |
collection |
Journal of Coloproctology (Rio de Janeiro. Online) |
repository.name.fl_str_mv |
Journal of Coloproctology (Rio de Janeiro. Online) - Sociedade Brasileira de Coloproctologia (SBCP) |
repository.mail.fl_str_mv |
||sbcp@sbcp.org.br |
_version_ |
1752126477521911808 |