BACKGROUND
The only known risk factor for chronic lymphocytic leukaemia (CLL) is occurrence of the disease in close relatives. The aim of this study was to determine the frequency of familial chronic lymphocytic leukaemia.
MATERIAL AND METHOD
All patients with chronic lymphocytic leukaemia notified to the Cancer Registry in the period 1.10.2007-31.12.2009 were asked to report occurrences of m...