case_images: PMC4899633_01
case_images: Plain radiography. a A ground-glass appearance with marked calcification and a pathological minor fracture in the right proximal femur. b Multiple ground-glass appearances in the skull.
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case_images: F1
case_images: A marked calcification-like shadow associated with a pathological fracture without displacement was seen inside the lesion (fig. 1a). In addition, multiple areas of bone thickening of the skull with a ground-glass appearance were observed (fig. 1b).
case_images: MRI. a Isointensity with punctate low signal intensity on T1-weighted images. b Irregular high signal intensity on T2-weighted images. c Irregular peripheral predominant enhancement on Gd contrast-enhanced images.
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case_images: PMC4899633_01_cro-0009-0126-g02.jpg
case_images: F2
case_images: The lesion showed isointensity with punctate low signal intensity in some areas on T1-weighted magnetic resonance imaging (MRI) images (fig. 2a) and irregular high-signal intensity on T2-weighted images (fig. 2b). Irregular peripheral predominant enhancement was seen on gadolinium (Gd) contrast-enhanced images (fig. 2c).
case_images: Bone scintigraphy showing an accumulation of radioactivity in the right ilium, right proximal femur, right proximal ulna, and the skull.
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case_images: F3
case_images: Bone scintigraphy revealed an accumulation of radioactivity in the right ilium, right proximal femur, right proximal ulna, and skull (fig. 3).
case_images: a Pathological fracture with displacement in the metaphysis of the right femur. b Artificial bone was implanted after curettage and fixed with a locking plate so that the varus of the proximal femur was corrected.
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case_images: F4
case_images: Plain radiography showed a pathological fracture with displacement in the metaphysis of the right femur (fig. 4a). During the surgery, artificial bone was implanted after curettage and fixed with a locking plate so that the varus of the proximal femur was corrected (fig. 4b).
case_images: Histopathological findings of the specimen. a Nodular hyaline cartilage tissue is present in the majority of the specimen without marked atypia. b Proliferation of fibroblast-like spindle cells and woven bone were evident in parts of the lesion.
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case_images: F5
case_images: Histopathological findings of the specimen obtained by curettage showed that nodular hyaline cartilage tissue was present in the majority of the specimen without marked atypia (fig. 5a). Proliferation of fibroblast-like spindle cells and woven bone were evident in part of the lesion (fig. 5b), and his final diagnosis was FCD.