Accuracy of thin section magnetic resonance using phased-array pelvic coil in predicting the T-staging of rectal cancer.
Eur J Radiol
; 53(2): 256-62, 2005 Feb.
Article
em En
| MEDLINE
| ID: mdl-15664289
ABSTRACT
Magnetic resonance (MR) imaging may contribute to staging rectal cancer and inform the decision regarding administration of pre-operative radiotherapy. The accuracy of MR has been debated. The aim of the present study was to determine the accuracy of thin section T2-weighted MR images in rectal cancer patients. MR results were compared with histological assessment of resection specimens. Over a 2-year period, 42 patients were studied. Histological staging was pT2 n = 13, pT3 n = 25 and pT4 n = 4. MR diagnostic accuracy was 74%. MR sensitivity and specificity was 62% and 79% for pT2 lesions, 84% and 59% for pT3 lesions and 50% and 76% for pT4 lesions. Estimation of tumour penetration by thin section MR imaging of rectal cancers using pelvic phased-array coil has moderate diagnostic accuracy. The limitations of MR should be acknowledged when selecting rectal cancer patients for pre-operative radiotherapy.
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Base de dados:
MEDLINE
Assunto principal:
Neoplasias Retais
/
Imageamento por Ressonância Magnética
/
Adenocarcinoma
Idioma:
En
Ano de publicação:
2005
Tipo de documento:
Article