title: B-chronic lymphocytic leukaemia in Latvia: epidemiological aspects.
abstract: As in western Europe and the USA, chronic lymphocytic leukaemia (CLL) in Latvia is the most prevalent type of leukaemia. A total of 1509 newly diagnosed cases of B-cell chronic lymphocytic leukaemia entered the study, 440 of whom were followed up at the Latvian Haematology Centre. The main peculiarities of the study were: 1) the higher incidence of the disease in Latvia as compared with other regions of the former USSR and with western countries, 2) a lower male-to-female ratio than in most other countries and 3) a higher morbidity among the Latvian population in comparison with the Russian. A positive correlation between the disease stage and survival was confirmed, but no precise individual prognosis in an early stage of the disease was possible.
authors.affiliation: Department of Leukaemia Research, Latvian Academy of Medicine, Riga.
authors.forename: L I
authors.initials: LI
authors.lastname: Yavorkovsky
authors.forename: Z F
authors.initials: ZF
authors.lastname: Terebkova
authors.forename: S V
authors.initials: SV
authors.lastname: Nikulshin
authors.forename: L L
authors.initials: LL
authors.lastname: Yavorkovsky
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D015994:Incidence; D007844:Latvia / Q000453:epidemiology; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000453:epidemiology* / Q000401:mortality / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D009367:Neoplasm Staging; D012426:Russia / Q000208:ethnology; D012737:Sex Factors; D016019:Survival Analysis; D015996:Survival Rate