title: [Familial occurrence of chronic lymphocytic leukemia: report of three siblings (author's transl)].
abstract: Chronic lymphocytic leukemia was diagnosed in three siblings. Familiar occurrence speaks in favor of a predisposition in this disorder of unknown etiology. According to the present status of knowledge endogenous - genetically determined - factors combined with exogenous factors (viruses, radiation exposure, toxic substances) participate in the etiopathogenesis of the different forms of leukemia.
mesh_terms: D000368:Aged; D001650:Bile Duct Neoplasms / Q000150:complications; D006801:Humans; D007945:Leukemia, Lymphoid / Q000150:complications / Q000209:etiology / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D013276:Stomach Ulcer / Q000150:complications
vernacular_title: Familiär-gehäuftes auftreten der chronischen lymphatischen Leukämie. Bericht über 3 erkrankte Brüder