Fig. 2
a Histologic analysis of hematoxylin and eosin-stained specimens of the left femur showed irregularly shaped spicules of immature bone without osteoblastic rimming and fibrous stroma with few mitotic activities, which consisted in the diagnosis of recurrence of FD of the left femur. b The histologic analysis of specimens from the amputation consisted in the diagnosis of PMH secondary to FD of the left lower limb. c Immunohistochemical analysis showed positive for CD31