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MR imaging features of benign retroperitoneal extra-adrenal paragangliomas

The goal of this study was to retrospectively review the magnetic resonance imaging (MRI) features of retroperitoneal extra-adrenal paragangliomas and to evaluate the diagnostic capabilities of MRI. Twenty-four patients with confirmed benign retroperitoneal extra-adrenal paragangliomas who underwent...

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Autores principales: Shen, Yanguang, Zhong, Yan, Wang, Haiyi, Ma, Lu, Wang, Yingwei, Pan, Jingjing, Zhang, Kun, Sun, Zhonghua, Ye, Huiyi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5495791/
https://www.ncbi.nlm.nih.gov/pubmed/28674383
http://dx.doi.org/10.1038/s41598-017-04753-y
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author Shen, Yanguang
Zhong, Yan
Wang, Haiyi
Ma, Lu
Wang, Yingwei
Pan, Jingjing
Zhang, Kun
Sun, Zhonghua
Ye, Huiyi
author_facet Shen, Yanguang
Zhong, Yan
Wang, Haiyi
Ma, Lu
Wang, Yingwei
Pan, Jingjing
Zhang, Kun
Sun, Zhonghua
Ye, Huiyi
author_sort Shen, Yanguang
collection PubMed
description The goal of this study was to retrospectively review the magnetic resonance imaging (MRI) features of retroperitoneal extra-adrenal paragangliomas and to evaluate the diagnostic capabilities of MRI. Twenty-four patients with confirmed benign retroperitoneal extra-adrenal paragangliomas who underwent preoperative MRI and surgical resection were enrolled. The patients’ clinical characteristics and MRI features were reviewed by two radiologists. There were no significant differences in the qualitative and quantitative MRI features were determined by the reviewers. High signal intensity in T2-weighted imaging (T2WI) and diffusion-weighted imaging (DWI) was observed in all tumors. In contrast T1-weighted imaging (T1WI) in the arterial phase, 83.33% of the tumors were clearly enhanced. In 87.5% of cases, a persistent enhancement pattern was observed in the venous and delayed phases, and 12.5% of tumors showed a “washout” pattern. The tumor capsule, intratumoral septum and degenerations were visualized in the tumors and may be helpful in the qualitative diagnosis of extra-adrenal paragangliomas in MRI. MRI was useful in locating the position, determining the tumor ranges and visualizing the relationship between the tumors and adjacent structures. The presence of typical clinical symptoms and positivity of biochemical tests are also important factors in making an accurate preoperative diagnosis.
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spelling pubmed-54957912017-07-07 MR imaging features of benign retroperitoneal extra-adrenal paragangliomas Shen, Yanguang Zhong, Yan Wang, Haiyi Ma, Lu Wang, Yingwei Pan, Jingjing Zhang, Kun Sun, Zhonghua Ye, Huiyi Sci Rep Article The goal of this study was to retrospectively review the magnetic resonance imaging (MRI) features of retroperitoneal extra-adrenal paragangliomas and to evaluate the diagnostic capabilities of MRI. Twenty-four patients with confirmed benign retroperitoneal extra-adrenal paragangliomas who underwent preoperative MRI and surgical resection were enrolled. The patients’ clinical characteristics and MRI features were reviewed by two radiologists. There were no significant differences in the qualitative and quantitative MRI features were determined by the reviewers. High signal intensity in T2-weighted imaging (T2WI) and diffusion-weighted imaging (DWI) was observed in all tumors. In contrast T1-weighted imaging (T1WI) in the arterial phase, 83.33% of the tumors were clearly enhanced. In 87.5% of cases, a persistent enhancement pattern was observed in the venous and delayed phases, and 12.5% of tumors showed a “washout” pattern. The tumor capsule, intratumoral septum and degenerations were visualized in the tumors and may be helpful in the qualitative diagnosis of extra-adrenal paragangliomas in MRI. MRI was useful in locating the position, determining the tumor ranges and visualizing the relationship between the tumors and adjacent structures. The presence of typical clinical symptoms and positivity of biochemical tests are also important factors in making an accurate preoperative diagnosis. Nature Publishing Group UK 2017-07-03 /pmc/articles/PMC5495791/ /pubmed/28674383 http://dx.doi.org/10.1038/s41598-017-04753-y Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Shen, Yanguang
Zhong, Yan
Wang, Haiyi
Ma, Lu
Wang, Yingwei
Pan, Jingjing
Zhang, Kun
Sun, Zhonghua
Ye, Huiyi
MR imaging features of benign retroperitoneal extra-adrenal paragangliomas
title MR imaging features of benign retroperitoneal extra-adrenal paragangliomas
title_full MR imaging features of benign retroperitoneal extra-adrenal paragangliomas
title_fullStr MR imaging features of benign retroperitoneal extra-adrenal paragangliomas
title_full_unstemmed MR imaging features of benign retroperitoneal extra-adrenal paragangliomas
title_short MR imaging features of benign retroperitoneal extra-adrenal paragangliomas
title_sort mr imaging features of benign retroperitoneal extra-adrenal paragangliomas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5495791/
https://www.ncbi.nlm.nih.gov/pubmed/28674383
http://dx.doi.org/10.1038/s41598-017-04753-y
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