Myeloid neoplasm with PDGFRA rearrangement presenting in blast-phase with basophilia.
An adult man from Southern Africa presented with progressive fatigue. Blood morphology showed marked basophilia and 21% myeloblasts, with flow cytometry supporting a provisional diagnosis of acute myeloid leukaemia with…
Clinical pearl
When basophilia, blasts and increased marrow mast cells create overlapping morphologic diagnoses, molecular testing can identify a PDGFRA fusion and clarify the underlying neoplasm.