Figure 3. Histology of bone marrow biopsy and ¹⁸F-FDG PET/CT scan of acute lymphoblastic leukemia (A) Bone marrow examination showing abnormal lymphocytes with hematoxylin-eosin staining, at a magnification of 400×, (B) ¹⁸F-FDG PET/CT image demonstrating diffuse hypermetabolism along the whole axial and appendicular bones and spleen with no residual hypermetabolism in the mass in the left breast.

FDG = fluorodeoxyglucose; PET/CT = positron emission tomography/computed tomography.