Femoral epithelioid hemangioendothelioma detected with magnetic resonance imaging and positron emission tomography/computed tomography: A case report

Figure 1 Plain X-ray and magnetic resonance imaging of the pelvis in a patient with bone epithelioid hemangioendothelioma. A: Bone destruction of the proximal femur on the left side; B: T1-weighted image showing the lesion in the left proximal femur side with low signal; C: T2-weighted image showing an obvious hyperintense signal in the left proximal femur.

Figure 2 ¹⁸F-deoxyglucose positron emission tomography/computed tomography imaging. A: Positron emission tomography maximum density projection shows intense metabolic foci in the left femoral region; B-D: Computed tomography and positron emission tomography/computed tomography fusion images showing visible bone crest in the area of osteolytic lesions in the left femur, increased metabolism (maximum standardized uptake value: 4.2), and involvement of surrounding muscles.

Figure 3 Histopathological images (× 400). A: Hematoxylin and eosin stained section showing spindle-shaped mesenchymal tissue hyperplasia with scattered epithelioid cells; B: Immunohistochemical staining with the EN-vision technique showing positivity for CD31; C: Immunohistochemical staining with the EN-vision technique showing positivity for ERG.