introduction: apoptosis is an important mechanism in both physiological and pathological conditions. the bcl2 family of proteins plays a critical role in regulation of apoptotic cell death. up and down regulation of bcl2-like 12 (bcl2l12), a new member of the bcl2 family, has been reported in several malignancies. however, the expression level of bcl2l12 rarely has been studied in leukemia. thi...

background: acute lymphoblastic leukemia (all) is the most common form of childhood cancer leading to cancer-related death in children. most infants with all harbor recurring structural chromosomal rearrangements that are important initiating events in leukemogenesis but are insufficient to explain the biology and heterogeneity of the disease. mixed-lineage leukemia-rearrangement (mll-rearrange...

purpose: to report an unusual ocular presentation of a relapse of acute lymphoblastic leukemia. case report: a 9-year-old girl presented with a subconjunctival mass and ipsilateral preauricular lymphadenopathy. she had history of acute lymphoblastic leukemia (all) in remission but had a normal blood cell profile. because of corneal dellen formation and enlargement of the mass over a 2-week peri...

hypercalcemia complicating malignancy is a rare complication in pediatric age group. in this article, we present a case with acute lymphoblastic leukemia presenting as severe hypercalcemia. a 10 years old girl presented with an acute onset of fever, nausea, vomiting, loss of weight, costovertebral pain and frequency. she was admitted with a presumptive diagnosis of acute pyelonephritis. her exa...

Midface bones are an unusual site for primary presentation and relapse in acute lymphoblastic leukemia. Herein, we describe a case of acute pre B cell lymphoblastic leukemia with leukemic infiltration of maxilla and bone marrow involvement. At the time of relapse, the patient presented again with maxilla involvement and the phenotype changed to biphenotypic lymphoblastic leukemia. Our case sug...

midface bones are an unusual site for primary presentation and relapse in acute lymphoblastic leukemia. herein, we describe a case of acute pre b cell lymphoblastic leukemia with leukemic infiltration of maxilla and bone marrow involvement. at the time of relapse, the patient presented again with maxilla involvement and the phenotype changed to biphenotypic lymphoblastic leukemia. our case sugg...

acute leukemia which is the most common cancer in children is a heterogeneous group of clonal malignancies. the conversion of the leukemic cell lineage during the course of the disease or later is termed lineage switch. it has been rarely reported in the literature. in leukemia lineage switch, conversions from lymphoblastic leukemia to myeloid leukemia or vice versa are reported. herein, we rep...

calcium metabolic disorders, such as hypercalcemia is a potentially life-threatening disorder especially when coupled with an already compromised condition. the aim of this study was to determine the prevalence of metabolic calcium disorders in childhood cancers of patients admitted to the pediatric ward of vali-asr hospital from the year 2001-2008. the study was carried out by reviewing hospit...

Acute lymphoblastic leukemia (ALL) constitute a family of genetically heterogeneous lymphoid neoplasms derived from B- and T-lymphoid progenitors. ALL affects both children and adults. Diagnosis is based on morphologic, immunophenotypic, and genetic features that allow differentiation from normal progenitors and other hematopoietic and nonhematopoietic neoplasms. The aim of this study was to in...

background : we conducted the present study to investigate the frequency of prothrombin g20210a mutation among acute lymphoblastic leukemia patients and healthy individuals from western iran and to detect the possible association between this mutation and the risk of acute lymphoblastic leukemia in our population. methods : the studied groups consisted of 92 children with acute lymphoblastic le...