T-cell blast crisis of chronic myelogenous leukemia manifesting as a large mediastinal tumor

Charles C. Ye, Carolina Echeverri, Jeanne E. Anderson, Janice L. Smith, Armand Glassman, Margaret L. Gulley, David Claxton, Fiona E. Craig

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We report an unusual case of T-cell blast crisis of chronic myelogenous leukemia (CML) with a clinical presentation more typical of de novo T-cell lymphoblastic lymphoma. The patient was a 32-year-old man who presented with acute superior vena cava syndrome 19 months after an initial diagnosis of CML and 5 months after allogeneic bone marrow transplantation. The tumor was composed of primitive lymphoid cells expressing CD2, CD3, CD4, CD5, CD7, CD8, and CD10. Although the clinical features were more typical of acute lymphoblastic leukemia/lymphoma, fluorescence in situ hybridization analysis showed the bcr-abl fusion gene within blastic tumor cells. This finding confirmed that the mass represented a blastic transformation of CML. We use the unusual features of the current case and the previous reports to suggest that the development of T-cell blast crisis of CML is dependent on the presence of both marrow and extramedullary disease and a mechanism to evade apoptosis.

Original languageEnglish (US)
Pages (from-to)770-773
Number of pages4
JournalHuman Pathology
Issue number7
Publication statusPublished - Jul 2002


All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine

Cite this

Ye, C. C., Echeverri, C., Anderson, J. E., Smith, J. L., Glassman, A., Gulley, M. L., ... Craig, F. E. (2002). T-cell blast crisis of chronic myelogenous leukemia manifesting as a large mediastinal tumor. Human Pathology, 33(7), 770-773. https://doi.org/10.1053/hupa.2002.126190