Large granular lymphocyte leukaemia study at the University Hospital of Donostia
| Autor: | Larraitz Aragón, Maria Araiz, Mercedes Rey, Naiara Robado, J. R. Furundarena, Alasne Uranga, Carmen G. Gonzalez, Maria Dolores De Juan, Ane Aranbarri, Iratxe Urreta |
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| Rok vydání: | 2020 |
| Předmět: |
Male
medicine.medical_specialty Lymphocytosis Lymphocyte Population Neutropenia Gastroenterology Asymptomatic Pathology and Forensic Medicine 03 medical and health sciences 0302 clinical medicine Internal medicine Medicine Neoplasm Humans education Retrospective Studies education.field_of_study Cytopenia business.industry General Medicine medicine.disease Hospitals Killer Cells Natural Leukemia Large Granular Lymphocytic medicine.anatomical_structure Lymphatic system 030220 oncology & carcinogenesis Female medicine.symptom business 030215 immunology |
| Zdroj: | Journal of clinical pathology. 75(4) |
| ISSN: | 1472-4146 |
| Popis: | IntroductionLarge granular lymphocyte (LGL) leukaemia is considered a mature T-cell or natural killer (NK) cell neoplasm, characterised by a clonal proliferation of LGL.AimsTo analyse the characteristics and to establish (if possible) the prognostic parameters of these patients diagnosed in a single centre: University Hospital of Donostia.MethodsWe retrospectively studied data about 308 patients with LGL leukaemia diagnosed in our centre.ResultsThe frequency of T-LGL leukaemia and chronic lymphoproliferative disorder of NK cells was 89% and 6.8% respectively, and no aggressive NK-LGL leukaemia was seen in our population. The median age at diagnosis was 65.7 years and male-to-female ratio was 1.08. 59% of our patients were asymptomatic at the time of diagnosis. Most patients presented lymphocytosis and 63.6% more than 20% LGLs in the peripheral blood count, but it has to be taken into account that these results may be influenced by the selection bias of our study, as we recognised these patients as ‘alarms of the laboratory analysers’. Neutropenia was the most common cytopenia, and autoimmune disorders were described in 16.5% of the patients. Only 12 patients (3.9%) required treatment, a much lower percentage that the one reported in the literature, and this is consistent with the fact that patients were less symptomatic than in other series, as we expected. The 5-year and 15-year overall survival was 92% and 87%, respectively.ConclusionsOur patients may represent the even more benign end of the spectrum of clonal T LGL and NK proliferations. |
| Databáze: | OpenAIRE |
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