Giant monostotic osteofibrous dysplasia of the ilium: A case report and review of literature

Figure 1 Radiography examination results. A: Extensive bone destruction of the right ilium on radiography examination, with a size of about 10 cm × 5 cm × 5 cm, and bone density also changed; B: Computed tomography shows osteosclerosis in the surrounding area of the ilium tumor without significant periosteal reaction in the coronary site; C: Trans-sectional site; D: Sagittal position (arrow indicates the area of lesion).

Figure 2 Magnetic resonance imaging examination results. A: Extensive bone destruction in right ilium. T1w suggests low-density change; B: T2w suggests high-density change, with surrounding soft issue swelling (arrow indicates the area of lesion).

Figure 3 Pathological reports. A: Calcified woven bone can be seen (HE; 40 ×); B: No osteoblast and osteoclast hyperplasia can be seen (HE; 40 ×); C: It shows Fibroblast and Mucoid matrix (HE; 40 ×); D: It shows fibro-osseous lesions, with discontinuity of the trabecular bone and calcification (HE; 40 ×). HE: Hematoxylin-eosin.

Figure 4 Postoperative radiography examinations. A and B: Artificial bone and autogenous bone in the weight-bearing zone of top acetabular were in place with satisfactory coverage.