The shading sign: is it exclusive of endometriomas?

Detalhes bibliográficos
Autor(a) principal: Dias, Joao Lopes
Data de Publicação: 2015
Outros Autores: Gomes, Filipe Veloso, Lucas, Rita, Cunha, Teresa Margarida
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.26/14936
Resumo: Objectives: To investigate if the shading sign is an exclusive MRI feature of endometriomas or endometrioid tumors, and to analyze its different patterns. Methods: 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. Results: 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. Conclusions: 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.
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spelling The shading sign: is it exclusive of endometriomas?EndometriomaEndometrioid carcinomaMagnetic resonance imagingGynecologyImagingObjectives: To investigate if the shading sign is an exclusive MRI feature of endometriomas or endometrioid tumors, and to analyze its different patterns. Methods: 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. Results: 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. Conclusions: 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.SpringerRepositório ComumDias, Joao LopesGomes, Filipe VelosoLucas, RitaCunha, Teresa Margarida2016-10-03T11:20:53Z20152016-07-23T11:11:16Z2015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.26/14936engJoao Lopes Dias; Filipe Veloso Gomes; Rita Lucas; Teresa Margarida Cunha. The Shading Sign: Is It Exclusive of Endometriomas?, Abdominal Imaging, 40, 7, 2566-2572, 2015.0942-892510.1007/s00261-015-0465-1info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-10T06:46:18Zoai:comum.rcaap.pt:10400.26/14936Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:36:13.967189Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv The shading sign: is it exclusive of endometriomas?
title The shading sign: is it exclusive of endometriomas?
spellingShingle The shading sign: is it exclusive of endometriomas?
Dias, Joao Lopes
Endometrioma
Endometrioid carcinoma
Magnetic resonance imaging
Gynecology
Imaging
title_short The shading sign: is it exclusive of endometriomas?
title_full The shading sign: is it exclusive of endometriomas?
title_fullStr The shading sign: is it exclusive of endometriomas?
title_full_unstemmed The shading sign: is it exclusive of endometriomas?
title_sort The shading sign: is it exclusive of endometriomas?
author Dias, Joao Lopes
author_facet Dias, Joao Lopes
Gomes, Filipe Veloso
Lucas, Rita
Cunha, Teresa Margarida
author_role author
author2 Gomes, Filipe Veloso
Lucas, Rita
Cunha, Teresa Margarida
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório Comum
dc.contributor.author.fl_str_mv Dias, Joao Lopes
Gomes, Filipe Veloso
Lucas, Rita
Cunha, Teresa Margarida
dc.subject.por.fl_str_mv Endometrioma
Endometrioid carcinoma
Magnetic resonance imaging
Gynecology
Imaging
topic Endometrioma
Endometrioid carcinoma
Magnetic resonance imaging
Gynecology
Imaging
description Objectives: To investigate if the shading sign is an exclusive MRI feature of endometriomas or endometrioid tumors, and to analyze its different patterns. Methods: 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. Results: 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. Conclusions: 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.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
2016-10-03T11:20:53Z
2016-07-23T11:11:16Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.26/14936
url http://hdl.handle.net/10400.26/14936
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Joao Lopes Dias; Filipe Veloso Gomes; Rita Lucas; Teresa Margarida Cunha. The Shading Sign: Is It Exclusive of Endometriomas?, Abdominal Imaging, 40, 7, 2566-2572, 2015.
0942-8925
10.1007/s00261-015-0465-1
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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