Fig. 3
T1-weighted magnetic resonance imaging (MRI) of the brain with contrast enhancement (sagittal view) and cerebrospinal fluid analysis. Leptomeningeal involvement by acute myeloid leukemia demonstrated by brain MRI with contrast (a) with diffuse pachymeningeal thickening and enhancement overlying the bilateral cerebral hemispheres (white arrows) and cerebrospinal fluid showing abnormal hypercellularity due to the presence of monoblasts (b and c; Wright Giemsa stain at 200× and 1000× magnification, respectively)