Publication
Magnetic resonance evaluation of adnexal masses
| dc.contributor.author | Guerra, A. | |
| dc.contributor.author | Cunha, Teresa Margarida | |
| dc.contributor.author | Félix, A. | |
| dc.date.accessioned | 2016-11-17T11:18:30Z | |
| dc.date.available | 2016-11-17T11:18:30Z | |
| dc.date.issued | 2008 | |
| dc.date.updated | 2016-07-23T14:31:38Z | |
| dc.description.abstract | 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, contrastenhanced 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 nonmalignant. 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. | pt_PT |
| dc.identifier | 0284-1851 | en_US |
| dc.identifier.citation | Guerra, A.; Cunha, T.M.; Félix, A.Magnetic Resonance Evaluation of Adnexal Masses, Acta Radiologica, 49, 6, 700-709, 2008. | pt_PT |
| dc.identifier.issn | 0284-1851 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/15484 | |
| dc.language.iso | eng | pt_PT |
| dc.subject | Adnexal masses | pt_PT |
| dc.subject | Genital | pt_PT |
| dc.subject | Magnetic resonance imaging | pt_PT |
| dc.subject | Ovarian tumor | pt_PT |
| dc.subject | Pelvis | pt_PT |
| dc.title | Magnetic resonance evaluation of adnexal masses | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 709 | pt_PT |
| oaire.citation.startPage | 700 | pt_PT |
| oaire.citation.title | Acta Radiologica | pt_PT |
| oaire.citation.volume | 6 | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |
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