Fig. 2.

MRI acquired 1 week after acute presentation. Coronal fat-suppressed T2-weighted sequence (a) shows low signal intensity of the ovoid lesion in the greater tuberosity in keeping with sclerosis (black arrow). This is a superficial focus of fluid signal (white arrow) traversing the region of cortical erosions, which were evident on the prior radiographs (black arrow in Fig. 1). Ill-defined hyperintensity consistent with marrow edema (curved arrow) surrounds the lesion. Sagittal T1-weighted sequence (b) shows the low signal intensity sclerotic lesion (black arrow), with focal superficial intermediate signal (white arrow).