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Unencapsulated thymoma: a case report

Thymomas, the most common mediastinal tumors, form capsules. Only a few reports have presented small thymomas without capsule formation, so-called microthymomas. Here, we report a case of an unencapsulated thymoma measuring 18 mm. A 42-year-old female presented with an anterior mediastinal tumor. Co...

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Autores principales: Yamamoto, Saki, Mizutani, Eiki, Morita, Riichiro, Kodama, Makoto, Abe, Keiko, Yazawa, Takuya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10576996/
https://www.ncbi.nlm.nih.gov/pubmed/37846423
http://dx.doi.org/10.1093/jscr/rjad543
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author Yamamoto, Saki
Mizutani, Eiki
Morita, Riichiro
Kodama, Makoto
Abe, Keiko
Yazawa, Takuya
author_facet Yamamoto, Saki
Mizutani, Eiki
Morita, Riichiro
Kodama, Makoto
Abe, Keiko
Yazawa, Takuya
author_sort Yamamoto, Saki
collection PubMed
description Thymomas, the most common mediastinal tumors, form capsules. Only a few reports have presented small thymomas without capsule formation, so-called microthymomas. Here, we report a case of an unencapsulated thymoma measuring 18 mm. A 42-year-old female presented with an anterior mediastinal tumor. Computed tomography revealed an 18-mm nodule in the anterior mediastinum. Magnetic resonance imaging revealed a solid tumor that was iso-intense on T1-weighted images and hypo-intense on T2-weighted images. Thoracoscopic partial thymectomy was performed. The histopathological diagnosis was a type B1 thymoma. The tumor was localized within the thymic tissue lacked a fibrous capsule and partially invaded the surrounding fat tissue. To our knowledge, this is the first report of an unencapsulated thymoma, except for microthymomas.
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spelling pubmed-105769962023-10-16 Unencapsulated thymoma: a case report Yamamoto, Saki Mizutani, Eiki Morita, Riichiro Kodama, Makoto Abe, Keiko Yazawa, Takuya J Surg Case Rep Case Report Thymomas, the most common mediastinal tumors, form capsules. Only a few reports have presented small thymomas without capsule formation, so-called microthymomas. Here, we report a case of an unencapsulated thymoma measuring 18 mm. A 42-year-old female presented with an anterior mediastinal tumor. Computed tomography revealed an 18-mm nodule in the anterior mediastinum. Magnetic resonance imaging revealed a solid tumor that was iso-intense on T1-weighted images and hypo-intense on T2-weighted images. Thoracoscopic partial thymectomy was performed. The histopathological diagnosis was a type B1 thymoma. The tumor was localized within the thymic tissue lacked a fibrous capsule and partially invaded the surrounding fat tissue. To our knowledge, this is the first report of an unencapsulated thymoma, except for microthymomas. Oxford University Press 2023-10-14 /pmc/articles/PMC10576996/ /pubmed/37846423 http://dx.doi.org/10.1093/jscr/rjad543 Text en Published by Oxford University Press and JSCR Publishing Ltd. © The Author(s) 2023. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Case Report
Yamamoto, Saki
Mizutani, Eiki
Morita, Riichiro
Kodama, Makoto
Abe, Keiko
Yazawa, Takuya
Unencapsulated thymoma: a case report
title Unencapsulated thymoma: a case report
title_full Unencapsulated thymoma: a case report
title_fullStr Unencapsulated thymoma: a case report
title_full_unstemmed Unencapsulated thymoma: a case report
title_short Unencapsulated thymoma: a case report
title_sort unencapsulated thymoma: a case report
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10576996/
https://www.ncbi.nlm.nih.gov/pubmed/37846423
http://dx.doi.org/10.1093/jscr/rjad543
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