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Appl Immunohistochem Mol Morphol ; 30(4): e32-e39, 2022 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-35001036

RESUMO

To describe the clinical, histologic, immunophenotypic, and genetic characteristics of myeloid sarcoma (MS) diagnosed in the testes of adults, 3 cases were identified, and information on their presentation, clinical features, treatment, and outcome was retrieved from the medical records. In addition, histologic, immunophenotypic, and molecular characteristics were reviewed. This showed that all patients had a previous history of acute myeloid leukemia (AML), in 2 cases diagnosed >10 years before the testicular lesions. In 1 case, there was bilateral involvement, while in 2, involvement was unilateral. The neoplastic cells showed evidence of cytogenetic/molecular clonal evolution in all cases, 1 of which also had significant immunophenotypic changes. A mutational profile including NPM1 p.Trp288Cysfs*12, IDH1 p.Arg132His NRAS p.Gly12Asp was seen in 2 of the 3 cases. Concurrent bone marrow involvement by a myeloid neoplasm was diagnosed in 2 patients, in 1, there was AML in the second 8% blasts. These patients progressed rapidly after MS and had a dismal outcome. The patient with no concurrent bone marrow disease had a favorable outcome. In conclusion, MS involving the testes of adults is a rare event, and it may represent the clonal evolution of AML.


Assuntos
Leucemia Mieloide Aguda , Sarcoma Mieloide , Adulto , Evolução Clonal , Humanos , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/patologia , Masculino , Mutação , Proteínas Nucleares/genética , Nucleofosmina , Sarcoma Mieloide/diagnóstico , Sarcoma Mieloide/genética , Testículo
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