Figure 8d. Lipomatosis of the median nerve in a patient with macrodactyly. (a, b) Clinical photograph (a) and anteroposterior radiograph (b) show soft-tissue and bone overgrowth (arrow in b) of the second and third digits with osseous bowing. (c) Axial T1-weighted (500/20) MR image reveals diffuse overgrowth of fat in several digits (arrows). (d, e) Photographs of the sagittally sectioned gross specimen (d) and coronally sectioned whole-mount specimen (H-E stain) (e) of involved digits demonstrate osseous and soft-tissue hypertrophy with predominance of fat (*).