The Shading Sign: Is It Exclusive of Endometriomas?
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.17/2326 |
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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The Shading Sign: Is It Exclusive of Endometriomas?HSJ IMAHSAC IMACarcinoma, Endometrioid/pathologyDiagnosis, DifferentialEndometrial Neoplasms/pathologyEndometriosis/pathologyEndometrium/pathologyMagnetic Resonance ImagingReproducibility of ResultsRetrospective StudiesSensitivity and SpecificityOBJECTIVES: 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.Springer VerlagRepositório do Centro Hospitalar Universitário de Lisboa Central, EPELopes Dias, JVeloso Gomes, FLucas, RCunha, TM2015-10-30T12:25:20Z2015-102015-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.17/2326engAbdom Imaging. 2015 Oct;40(7):2566-7210.1007/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:RCAAP2023-03-10T09:36:25Zoai:repositorio.chlc.min-saude.pt:10400.17/2326Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:19:41.506392Repositório 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? Lopes Dias, J HSJ IMA HSAC IMA Carcinoma, Endometrioid/pathology Diagnosis, Differential Endometrial Neoplasms/pathology Endometriosis/pathology Endometrium/pathology Magnetic Resonance Imaging Reproducibility of Results Retrospective Studies Sensitivity and Specificity |
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 |
Lopes Dias, J |
author_facet |
Lopes Dias, J Veloso Gomes, F Lucas, R Cunha, TM |
author_role |
author |
author2 |
Veloso Gomes, F Lucas, R Cunha, TM |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Repositório do Centro Hospitalar Universitário de Lisboa Central, EPE |
dc.contributor.author.fl_str_mv |
Lopes Dias, J Veloso Gomes, F Lucas, R Cunha, TM |
dc.subject.por.fl_str_mv |
HSJ IMA HSAC IMA Carcinoma, Endometrioid/pathology Diagnosis, Differential Endometrial Neoplasms/pathology Endometriosis/pathology Endometrium/pathology Magnetic Resonance Imaging Reproducibility of Results Retrospective Studies Sensitivity and Specificity |
topic |
HSJ IMA HSAC IMA Carcinoma, Endometrioid/pathology Diagnosis, Differential Endometrial Neoplasms/pathology Endometriosis/pathology Endometrium/pathology Magnetic Resonance Imaging Reproducibility of Results Retrospective Studies Sensitivity and Specificity |
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 |
2015-10-30T12:25:20Z 2015-10 2015-10-01T00:00:00Z |
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/10400.17/2326 |
url |
http://hdl.handle.net/10400.17/2326 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Abdom Imaging. 2015 Oct;40(7):2566-72 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 Verlag |
publisher.none.fl_str_mv |
Springer Verlag |
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 |
institution |
RCAAP |
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 |
repository.mail.fl_str_mv |
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1799131293736239104 |