Abstract
Plasma cell leukemia (PCL) is arare but most aggressive form of monoclonal gammopathies. PCL is characterized by the presence of clonal plasma cells in peripheral blood. There are two forms of PCL - primary which presents denovo in patients with no evidence of previous multiple myeloma and secondary which is aleukemic transformation of relapsed or refractory dis-ease in patients with previously recognized multiple myeloma. This is the first study to provide information on PCL epidemiology in the Czech population us-ing The Czech National Cancer Registry (CNCR) as the basic source of data for the population-based evaluation of PCL epidemiology. Accord-ing to CNCR data, there were on average six newly dia-gnosed cases of PCL and four deaths caused by PCL each year in the Czech Republic in the period 2000- 2015. PCL incidence in the Czech Republic was reported at 0.57per million in 2000- 2015. We suppose that most reported cases of PCL are primary PCL because secondary PCL is arelapse of apreviously reported myeloma and, in most cases, is not coded as an independent dia-gnosis in the CNCR. Data from registries such as the CNCR can provide useful information on epidemiology of various dis-eases. These data, however, have several limitations, such as dia-gnostic criteria and proper cod-ing of not only the dis-ease itself, but also its various forms. These limitations have to be taken into account dur-ing the process of results interpretation. Key words plasma cell leukemia-  epidemiology-  Czech National Cancer Registry (CNCR)-  Czech Republic.
Published Version
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