The presence of lymphoblasts in the peripheral blood; sometimes used as a synonym for acute lymphocytic leukaemia. ... Origin: Lymphoblast + G. -osis, condition ... (05 Mar 2000) ... 
(lim″fo-blas-to´sis) an excess of lymphoblasts in the blood, as seen in lymphoblastic leukemia.
Type: Term Pronunciation: lim′fō-blas-tō′sis Definitions: 1. The presence of lymphoblasts in the peripheral blood; sometimes used as a synonym for acute lymphocytic leukemia.