Fig. 2
From: Masses of developmental and genetic origin affecting the paediatric craniofacial skeleton
Magnetic resonance imaging (MRI) findings of FD involving the greater wing of sphenoid bone in a patient with left orbital pain. Axial (a) and coronal (b) CT images (bone window) show an enlarged greater wing of the left sphenoid bone (arrows) with medullary expansion and intact cortical outline. Ground-glass opacities within the affected bone. No bone destruction. c Diffusion-weighted imaging ((DWI) reveals intermediate signal on the b = 1000 image (arrowhead, upper image part) and on the ADC map (arrowhead, lower image part, apparent diffusion coefficient [ADC] = 1.4 × 10−3 mm2/s). d Heterogeneous low signal on T2 without intracranial extension. e Homogeneous low T1 signal (arrow). f Heterogeneous non-specific enhancement on the gadolinium-enhanced coronal fat-saturated T1 (arrowhead)