Going Bone Deep: Osseous Rosai–Dorfman Disease in an Adult with Recurrent, Culture-Negative Osteomyelitis

Figure 1

(a) Coronal MRI demonstrating a T1-hypointense lesion in the right proximal tibia with cortical destruction; (b) hematoxylin and eosin- (H&E-) stained section of the patient’s tibia lesion demonstrating numerous eosinophilic histiocytes and emperipolesis (black circles).

(a)

(b)