Hematopoietic Cell Transplant Relapse

**Semantic type:** Finding

**Definition:** Recurrence of malignancy following hematopoietic cell transplantation, based on one or more of the following parameters: marrow morphology, flow cytometry, cytogenetic studies, including fluorescence in situ hybridization, electrophoresis, immunofixation assays, and polymerase chain reaction-based assays for disease markers, or imaging results.