Jak-2 mutation frequency in patients with thrombocytosis

Background: We aimed to investigate the etiologic causes and the existence of Janus kinase 2 mutation (JAK2) in cases with thrombocytosis. Methods: In this retrospective study, patients who were admitted to hematology clinic with thrombocytosis between 2013 and 2015 were investigated in terms of the etiological causes of thrombocytosis and the existence of JAK2 mutation. Results: We retrospectively evaluated 136 cases that underwent JAK2 mutation analysis due to ET preliminary diagnosis in our hematology clinic. The mean age of the patients was 56.7±15.3 years (range: 22-86 years) and 71 (52%) were males. JAK2 mutation was found to be positive in 58 (42%) of cases. The mean platelet counts of the cases were 860.25×109 / L (range: 455-1,105 109 /L) and the mean spleen vertical length was 135.1±21.6 mm (range: 110-220 mm). Conclusions: JAK2 mutation analysis and bone marrow biopsy are the two main procedures to diagnose primary thrombocytosis in adults with persistent thrombocytosis after excluding the causes of secondary thrombocytosis. Myeloproliferative neoplasms and essential thrombocytosis are the common causes of primary thrombocytosis in adults with persistent thrombocytosis, as myelodysplastic syndrome rarely causes primary thrombocytosis

A case with acute myeloid leukemia and hepatosplenic Candida parapsilosis

Hepatosplenic candidiasis (HSC) is a disseminated invasive fungal infection that develops commonly in patients with acute leukemia. The main symptom of HSC is a persistent fever in patients who have recovered from prolonged neutropenia subsequent to recent chemotherapy. Herein, a case is presented of a 32-year-old man who was followed up at hematology ward due to acute myeloid leukemia and febrile neutropenia related to cytarabine (ara-C) and daunorubicin chemotherapy. HSC was diagnosed and confirmed by ultrasonography, the culture of blood, and biopsy specimen

Etiological causes of pancytopenia: A report of 137 cases

Objective: The aim of this study is to evaluate the etiological causes of pancytopenia in patients who were admitted to the hematology ward due to pancytopenia. Materials and Methods: All patients who were admitted to the hematology ward of Ministry of Health Istanbul Training and Research Hospital due to pancytopenia between 2013 and 2015 were retrospectively evaluated regarding etiological causes. Results: A total of 137 patients was evaluated. The etiological causes of pancytopenia were recorded as Vitamin B12 deficiency (n: 24; 17%), chronic liver disease (n: 21; 15%), malignancy (n: 19; 13%), myelodysplastic syndrome (n: 18; 13%), aplastic anemia (n: 11; 8%), rheumatic diseases (n: 7; 5%), and endocrine causes (n: 3; 2%). Conclusion: The etiological causes of pancytopenia vary depends on patients′ age, gender, country, and other conditions. Vitamin B12 deficiency is the most common treatable cause of pancytopenia. Most of the etiological causes could be diagnosed with laboratory analysis and radiological imagings, without the need of a bone marrow examination