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The shading sign: is it exclusive of endometriomas?

dc.contributor.authorDias, Joao Lopes
dc.contributor.authorVeloso Gomes, Filipe
dc.contributor.authorLucas, Rita
dc.contributor.authorCunha, Teresa Margarida
dc.date.accessioned2018-12-07T14:58:04Z
dc.date.available2018-12-07T14:58:04Z
dc.date.issued2015-10
dc.description.abstractTo investigate if the shading sign is an exclusive MRI feature of endometriomas or endometrioid tumors, and to analyze its different patterns. Three hundred and fourty six women with adnexal masses who underwent 1.5/3-T MRI were included in this retrospective, board-approved study. The shading sign was found in 56 patients, but five cases were excluded due to lack of imaging follow-up or histological correlation. The final sample included 51 women. The type of tumor and the pattern of shading were recorded for each case. Thirty endometriomas and five endometrioid carcinomas were found. The remaining 16 cases corresponded to other benign and malignant tumors. The overall sensitivity, specificity, positive predictive value, and negative predictive value were 73%, 93%, 59%, and 96%, respectively. Restricting the analysis to cystic lesions without solid or fat component, sensitivity, specificity, positive predictive value, and negative predictive value were 73%, 96%, 94%, and 80%. Five shading patterns were identified: layering (15.7%), liquid-liquid level (11.8%), homogenous (45.1%), heterogeneous (11.8%), and focal/multifocal shading within a complex mass (19.6%). No significant correlation was found between these patterns and the type of tumor. The shading sign is not exclusive of endometriomas or endometrioid tumors. Homogenous shading was the most prevalent pattern in endometriomas and half of the cases with focal/multifocal shading within a complex mass were endometrioid carcinomas.
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1007/s00261-015-0465-1
dc.identifier.issn0942-8925
dc.identifier.issn1432-0509
dc.identifier.urihttp://hdl.handle.net/10400.1/11837
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectOvarian-cancer
dc.subjectEndometrioma
dc.subjectCysts
dc.titleThe shading sign: is it exclusive of endometriomas?
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2572
oaire.citation.issue7
oaire.citation.startPage2566
oaire.citation.titleAbdominal Imaging
oaire.citation.volume40
person.familyNameVeloso Gomes
person.givenNameFilipe
person.identifier.ciencia-id0110-D2E4-3038
person.identifier.orcid0000-0002-1435-4665
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication3a252d08-c653-44d1-a88d-1abf7db9472e
relation.isAuthorOfPublication.latestForDiscovery3a252d08-c653-44d1-a88d-1abf7db9472e

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