Dendritic Cells ; pathology ; Humans ; Leukemia, Myeloid ; pathology ; Plasmacytoma ; pathology

Spectral karyotyping (SKY) is a novel cytogenetic technique, has been developed to unambiguously display and identify all 24 human chromosomes at one time without a priori knowledge of any abnormalities involved. SKY discerns the aberrations that can not be detected very well by conventional banding technique and fluorescent in situ hybridization (FISH). So SKY is hyper-accurate, hypersensitive, and hyper-intuitional. In this paper the basic principle of SKY technique and its application in leukemia cytogenetics were reviewed.
Humans ; Karyotyping ; Leukemia ; genetics ; pathology ; Spectral Karyotyping

Background: Detection of BCR/ABL fusion gene has important significance in diagnosing and monitoring response to therapy in chronic myeloid leukemia. Objective: Application of FISH (Fluorescence In Situ Hybrydization) technique for detection of abl/bcr fusion gene in chronic myelogenous leukemia. Subjects and methods: The study included 10 patients of chronic myelogenous leukemia diagnosed by methods of morphology and cell chemistry. Peripheral blood and bone marrow samples of them were analyzed Philadelphia (Ph1) chromosome by cytogenetic technique. Among them, 5 patients were tested by FISH technique on the slide of interphase and remainders were tested by FISH technique on the slide of metaphase cell. Results: Results of analyzing chromosome of 10 patients showed that 8 patients had Ph1 chromosome. 2 patients without Ph1 chromosome were patients who had not high of leukocyte count: 28x109leukocyte/l and 36x109leukocyte/l, respectively. In the FISH on the slide of interphase, all 5 patients had Ph1 chromosome and abl/bcr fusion gene. In the FISH on the slide of metaphase cell, 3 patients had Ph1 chromosome and abl/bcr fusion gene. Conclusion: FISH technique has been applied successfully to detect ABL/BCR gene in patients with chronic myelogenous leukemia.\r\n', u'\r\n', u'
Leukemia ; Myelogenous ; Chronic ; BCR-ABL Positive/ pathology

Background: Acute myelogenous leukemia (AML) is the most common disease of malignant hemopathy in adult. Although induction therapy induced the long complete remissions, but complications of this intensive therapy is very serious. Objectives: to evaluate the complications of induction chemotherapy in adult patients with acute myelogenous leukemia at Hue central hospital". Subject and method: 30 AML patients aged from 10 to 30 were treated at clinical hematology service, Hue central hospital from Mars, 2005 to July, 2006. The diagnosis of AML based on FAB classification. Induction therapy consisted of a combination of cytarabin 100mglm2/day given by continuous IV over 7 days and daunorubicin 45mg/m2/day for 3 days. Complications were evaluated based on toxicity grade of WHO. \r\n', u'Results: Alopecia was the most common complications (100%) but good recovery. Gastrointestinal toxicity included: nausea and vomiting (6.6%), oral mucositis (40%) and diarrhea (30%) Cerebral hemorrhage due thrombocytopenia (6.66%) and neutropenic septicemia (20%) are the most severe complications. Acute complications on cardio - vascular system were rare and only mild degree. Conclusion: The complications of induction chemotherapy in adult patients with acute myelogenous leukemia occur at many organs with different degrees. Among of them, bone marrow suppression is the most severe complication with cerebral hemorrhage due thrombocytopenia and neutropenic septicemia which are fatal complications in theses patients. \r\n', u'\r\n', u'
Leukemia ; Myeloid ; Acute/ complications ; pathology ; drug therapy

Renal involvement by leukemic cells is rare in chronic myelogenous leukemia (CML). Herein, this study reports a case of CML associated with renal involvement of leukemic cells, which occurred 1 and 1/2 years after the initial diagnosis. Abdomino-pelvic computed tomography revealed a 4.4 x4.2 cm-sized, low-density solid mass having a thick wall from the mid to lower pole of the left kidney. A peripheral blood analysis revealed blastic transformation of CML. The biopsied renal parenchyme was diffusely infiltrated by sheets of immature myeloid cells, polymorphonuclear leukocytes, and occasional eosinophils. Most of the infiltrating cells were positive for anti-neutrophil elastase, but negative for lymphoid markers. Therefore, differential diagnosis of a kidney tumor during the course of CML, especially in the time of blastic transformation, should be performed.
Aged ; Female ; Humans ; Kidney Neoplasms/*pathology ; Leukemia, Myeloid, Chronic/*pathology

Relapse, which puzzled several generations of hematologists, is the bottle-neck of radical treatment for leukemias. The progress of Human Microbiome Project at the beginning of 21st century suggested that human body was a super-organism constituted by the core of human cells and symbiotic microorganisms. The elucidation and characterization of endogenous retrovirus and prion protein suggested the possible effects of co-evolutional microorganisms on human health. Recently, the elucidation of the roles of tunneling nanotubes in intercellular communication and transportation suggested a novel way for cellular communication and transport of oncogenic materials. The role and significance of in vivo cell fusion have been studied in more detail. On the other hand, donor cell leukemia was reported. All of these approaches provide novel insights for studying the mechanism of leukemia relapse. Based on previous work, the authors suggest the hypothesis: there are two possible mechanisms for the relapse of leukemias: the minimal residual disease (MRD) and intercellular transportation of oncogenic materials.
Cell Fusion ; Humans ; Leukemia ; pathology ; Neoplasm, Residual ; pathology ; Recurrence

Adolescent ; Humans ; Leukemia, Myeloid, Acute ; etiology ; pathology ; Male ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; complications ; pathology

BACKGROUND: Different criteria have been used to diagnose mixed-phenotype acute leukemia (MPAL), which has impacted the number of individuals diagnosed with this pathology. Better outcomes have been reported when using acute lymphoblastic leukemia (ALL)-type chemotherapy in the treatment of MPAL. METHODS: We compared the outcome of 4 groups of patients with MPAL. Group 1 included patients diagnosed using the 2008/2016 World Health Organization (WHO) classification; group 2 included patients diagnosed using the European Group for the Immunological Characterization of Leukemias (EGIL) criteria; group 3 included patients diagnosed using either the EGIL or the 2008/2016 WHO criteria; and group 4 was comprised of patients diagnosed with MPAL using the EGIL classification only. RESULTS: We found a significantly worse disease-free survival (groups 1-4) and overall survival (OS) (groups 2 and 3) when comparing MPAL patients to other acute leukemia (AL) patients. A significantly better OS was obtained in patients (groups 2-4) treated with ALL-type chemotherapy compared to acute myeloid leukemia (AML)-type regimens. CONCLUSION: In light of these results, and because a trend (P=0.06) was found with regard to a better OS in group 4 when compared to other AL patients, an argument can be made that the 2008/2016 WHO classification is underpowered to diagnose all MPAL cases, potentially resulting in the suboptimal treatment of some individuals with AL.
Classification* ; Disease-Free Survival ; Drug Therapy ; Humans ; Leukemia* ; Leukemia, Myeloid, Acute ; Pathology ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; World Health Organization

Acute promyelocytic leukemia (APL), which is usually defined by the morphological features of the leukemic cells, is characterized by the t(15;17) (q22;q21) chromosomal translocation and disseminated intravascular coagulation. This specific translocation results in a new fusion transcript between the promyelocytic leukemia (PML) gene and the retinoic acid receptor-alpha (RARalpha) gene. Although the presence of this fusion gene can predict a favorable clinical response to all-trans-retinoic-acid (ATRA) treatment, APL with chromosomal translocations other than t(15;17) (q22;q21) is extremely rare and is associated with a poor prognosis. We experienced a case of APL with de novo t(11;19).
Disseminated Intravascular Coagulation ; Leukemia ; Leukemia, Promyelocytic, Acute ; Pathology, Molecular ; Prognosis ; Translocation, Genetic ; Tretinoin

Cell-Derived Microparticles ; Disease Progression ; Humans ; Leukemia ; pathology