| learning disorders | Impairment of learning ability due to emotional, environmental or physiological factors. (12 Dec 1998) |
|---|---|
| leukocyte disorders | Disordered formation of various types of leukocytes or an abnormal accumulation or deficiency of these cells. (12 Dec 1998) |
| lymphoproliferative disorders | Disorders characterised by proliferation of lymphoid tissue, general or unspecified. (12 Dec 1998) |