Lymph node biopsy (LN1) showing replacement by T lymphoblastic lymphoma (H&E, 20x).
High power view of LN1 demonstrating lymphoblastic morphology of the cells (H&E, 40x).
Bone marrow aspirate (BM3) demonstrating profound eosinophilia and myeloid hyperplasia (Wright Giesma, 40x).
Bone marrow biopsy (BM3) demonstrating eosinophilia and hypercellularity (H&E, 40x).
Fluorescent in situ hybridization of LN1 demonstrating PDGFRB translocation.
Fluorescent in situ hybridization of BM3 demonstrating PDGFRB translocation.