Occurs in childhood
(2-10yrs)
Most common in <1 yr
olds
90% remission in
children
Also a peak at 40 yr
olds
Rapidly fatal if
untreated
60% cure rate in
children
68-91% remission in
adults
25-41% cure rate in
adults
50% cases with
leukocytosis
5.0-30.0 x 109/L or > 100-200
Rapidly fatal if
untreated