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Journal Article
[Analysis of Clinical Characteristics in De novo Chronic Myelogenous Leukemia Patients with Extramedullary T-Lymphoblastic Blast Crisis].
Zhongguo Shi Yan Xue Ye Xue za Zhi 2020 October
OBJECTIVE: To report the clinical characteristics in a case of extramedullary T-lymphoblastic blast crisis of de novo chronic myelogenous leukemia (CML) so as to improve the understanding of this disease.
METHODS: The clinical characteristics, diagnostic approach and treatment of the patient were retrospectively analyzed, and some related literatures were reviewed.
RESULTS: According to resuts of blood routine, bone marrow, chromosome and fusion gene tests, this patient was considered to be CML patient. The cervical lymph node biopsy indicated a T-cell lymphoblastic lymphoma (TLBL), and fluorescence in situ hybridization (FISH) analysis showed the BCR-ABL fusion gene within tumor cells of the patient's lymphnodes, thus was confirmedly diagnosed as extramedullary T-lymphoblastic blast crisis of chronic myelogenous leukemia. Treatment with dasatinib 140 mg/d combined with chemotherapy was then initiated, while the patient never achieved a complete remission.
CONCLUSION: De novo chronic myelogenous leukemia in blast crisis is infrequent presence, the cases of extramedullary T-lymphoblastic blast crisis of newly diagnosed CML with additional chromosome 11q23 are extremely rare. And prognosis of these patients are poor, allogeneic hematopoietic stem cell transplantation maybe the only curable treatment.
METHODS: The clinical characteristics, diagnostic approach and treatment of the patient were retrospectively analyzed, and some related literatures were reviewed.
RESULTS: According to resuts of blood routine, bone marrow, chromosome and fusion gene tests, this patient was considered to be CML patient. The cervical lymph node biopsy indicated a T-cell lymphoblastic lymphoma (TLBL), and fluorescence in situ hybridization (FISH) analysis showed the BCR-ABL fusion gene within tumor cells of the patient's lymphnodes, thus was confirmedly diagnosed as extramedullary T-lymphoblastic blast crisis of chronic myelogenous leukemia. Treatment with dasatinib 140 mg/d combined with chemotherapy was then initiated, while the patient never achieved a complete remission.
CONCLUSION: De novo chronic myelogenous leukemia in blast crisis is infrequent presence, the cases of extramedullary T-lymphoblastic blast crisis of newly diagnosed CML with additional chromosome 11q23 are extremely rare. And prognosis of these patients are poor, allogeneic hematopoietic stem cell transplantation maybe the only curable treatment.
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