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Magnetic Resonance Evaluation of Adnexal Masses

Guerra, A. ; Cunha, T. M. ; Félix, A.

Acta radiologica (1987), 2008-07, Vol.49 (6), p.700-709 [Periódico revisado por pares]

London, England: Informa UK Ltd

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Título:
Magnetic Resonance Evaluation of Adnexal Masses
Autor: Guerra, A. ; Cunha, T. M. ; Félix, A.
Assuntos: Adnexal Diseases - diagnosis ; Adolescent ; Adult ; Aged ; Aged, 80 and over ; Biological and medical sciences ; Contrast Media - administration & dosage ; Cystadenoma - diagnosis ; Endometriosis - diagnosis ; Female ; Humans ; Image Enhancement - methods ; Investigative techniques, diagnostic techniques (general aspects) ; Leiomyoma - diagnosis ; Magnetic Resonance Imaging - methods ; Medical sciences ; Middle Aged ; Neoplasms, Germ Cell and Embryonal - diagnosis ; Ovarian Neoplasms - diagnosis ; Predictive Value of Tests ; Reproducibility of Results ; Retrospective Studies ; Sensitivity and Specificity
É parte de: Acta radiologica (1987), 2008-07, Vol.49 (6), p.700-709
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Background: Accurate evaluation of adnexal masses allows correct surgical procedure, avoiding unnecessary surgery. Purpose: To evaluate the accuracy of magnetic resonance imaging (MRI) in the diagnosis of malignancy of adnexal lesions. Material and Methods: We retrospectively reviewed the pelvic MRI scans of 161 patients with 199 surgically confirmed adnexal masses, between November 1998 and June 2005. The criteria for adnexal malignancy were contrast-enhanced solid lesions, contrast-enhanced solid components in mixed lesions (except those with low-signal-intensity solid components on T2-weighted imaging [T2WI]), contrast-enhanced papillary projections in cystic lesions (except those with low-signal-intensity papillary projections on T2WI), or septal thickness ≥3 mm. Ascites, peritoneal metastasis, and pelvic adenopathy were also regarded as criteria for malignancy. Results: On MRI evaluation, 97 adnexal lesions were malignant and 102 were non-malignant. Thirty-two percent of patients with ascites had benign lesions. Histopathologic evaluation of the adnexal lesions showed that 83 were malignant (true positives), 100 were non-malignant (true negatives), and seven were uncertain malignant potential tumors; two were false negative and seven were false positive. The MRI sensitivity and specificity for malignancy were 98% and 93%, respectively. MRI reached an accuracy of 95%, with a positive predictive value of 0.92 and a negative predictive value of 0.98 for malignant adnexal lesions. The kappa coefficient was 0.906, indicating almost perfect agreement between MRI and histological results. Conclusion: MRI is an accurate method for evaluating the malignancy of adnexal lesions.
Editor: London, England: Informa UK Ltd
Idioma: Inglês

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Magnetic Resonance Evaluation of Adnexal Masses

Guerra, A. ; Cunha, T. M. ; Félix, A.

London, England: Informa UK Ltd

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