Uterine inflammatory myofibroblastic tumor: First report of a ROS1 fusion.
Genes Chromosomes Cancer
; 60(12): 822-826, 2021 12.
Article
em En
| MEDLINE
| ID: mdl-34322931
ABSTRACT
Inflammatory myofibroblastic tumor (IMT) of the uterus is an uncommon mesenchymal neoplasm that frequently harbors ALK rearrangements. In this report, we describe the first uterine IMT with a FN1-ROS1 fusion, which occurred in a 43-year-old woman who presented with menorrhagia. Morphologically, the well-circumscribed 3 cm tumor was comprised of compact and myxoid foci of relatively bland spindle cells admixed with scattered chronic inflammatory cells limited to the myxoid areas. ROS1 showed moderate cytoplasmic granular staining in < 30% of cells in the myxoid foci, while ALK was negative. RNA sequencing detected a FN1-ROS1 rearrangement that fused FN1 exon 37 to ROS1 exon 34. Although non-ALK-rearranged uterine IMTs are exceedingly rare, this example highlights the importance of performing ROS1 immunohistochemistry and/or molecular analysis in ALK-negative uterine neoplasms morphologically compatible with IMT.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Uterinas
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Proteínas Tirosina Quinases
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Proteínas Proto-Oncogênicas
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Fibronectinas
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Quinase do Linfoma Anaplásico
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Neoplasias de Tecido Muscular
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
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Female
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Humans
Idioma:
En
Revista:
Genes Chromosomes Cancer
Ano de publicação:
2021
Tipo de documento:
Article