the great majority ( 79 % ) of the patients were recognized as having malignant lymphoproliferative diseases , such as chronic lymphocytic leukemia ( 46 % ) , hairy cell leukemia ( 6 % ) , and non-hodgkin 's lymphoma ( 27 % ) , whereas only two patients ( 6 % ) had multiple myeloma or systemic amyloidosis .
C0024314
lymphoproliferative diseases
C0026764
multiple