Bibliographic Details
| Title: |
Pulmonary inflammatory leiomyosarcoma represents a potential diagnostic pitfall of DNA methylation-based classification of sarcomas: a case report |
| Authors: |
Takahiro Shibayama, Kaishi Satomi, Ryota Tanaka, Akihiko Yoshida, Kiyotaka Nagahama, Akimasa Hayashi, Takashi Hibiya, Kazuharu Suda, Masachika Fujiwara, Junji Shibahara |
| Source: |
BMC Pulmonary Medicine, Vol 23, Iss 1, Pp 1-6 (2023) |
| Publisher Information: |
BMC, 2023. |
| Publication Year: |
2023 |
| Collection: |
LCC:Diseases of the respiratory system |
| Subject Terms: |
Sarcoma, Pulmonary, Inflammatory leiomyosarcoma, DNA methylation, Diseases of the respiratory system, RC705-779 |
| More Details: |
Abstract Background Pulmonary inflammatory leiomyosarcoma (PILMS) is a rare type of myogenic tumor with prominent lymphohistiocytic infiltration. Despite their histological similarities, PILMS is immunohistochemically and genetically distinct from soft tissue inflammatory leiomyosarcoma, and its clinicopathological picture including DNA methylome data remains still unknown. Case presentation Here we present a case of PILMS in an 18-year-old male who underwent lobectomy. As reported previously, the current case demonstrated spindle myoid cell proliferation with smooth muscle differentiation within a prominent lymphohistiocytic infiltration and a diploid genome with a MUC3A gene alteration. DNA methylation analysis predicted this case to be an “inflammatory myofibroblastic tumor” (IMT) according to the Deutsches Krebsforschungszentrum (DKFZ) classifier. The data was analyzed by t-distributed stochastic neighbor embedding, which plotted the case tumor in the vicinity of IMT, however, there were no IMT histological features. These discordant results could be due to background non-neoplastic inflammatory cells. Conclusions As the DNA methylation classification of PILMS might be a potential diagnostic pitfall, an integrative histological and genetic approach is required for its accurate diagnosis. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1471-2466 |
| Relation: |
https://doaj.org/toc/1471-2466 |
| DOI: |
10.1186/s12890-023-02624-z |
| Access URL: |
https://doaj.org/article/c7c0181bd16c495ca5ef4cd75fad9fdd |
| Accession Number: |
edsdoj.7c0181bd16c495ca5ef4cd75fad9fdd |
| Database: |
Directory of Open Access Journals |
