Early Relapse of Acute Lymphoblastic Leukemia

**Semantic type:** Finding

**Definition:** Clinical and/or laboratory evidence of reemergence of acute lymphoblastic leukemia less than 18 months (extramedullary) or 36 months (marrow) from diagnosis.

**Synonyms:** - Early Recurrence of ALL - Early Recurrence of ALL - Early Recurrence of Acute Lymphoblastic Leukemia - Early Recurrence of Acute Lymphoblastic Leukemia - Early Relapse of ALL - Early Relapse of ALL