Presentation
Right lower mid tibia-fibula raised lump, swelling post playing football. Bony tenderness.
Patient Data
A well-defined radiolucent lesion is demonstrated in the right tibial diaphysis with a ground-glass appearance, endosteal thinning of the cortex, and some ballooning of the shaft. No periosteal reaction is seen.
Another smaller, mildly sclerotic focus is noted at the proximal tibial shaft.
A well-defined T1 isointense and T2 low signal intensity focus at the mid-shaft of the tibia, owing to the high content of collagen and bone, without any aggressive features.
A small similar signal intensity focus is noted at the proximal tibia.
Case Discussion
Fibrous dysplasia (FD) is a developmental benign medullary fibro-osseous process characterized by the failure to form mature lamellar bone and arrest as woven bone, which can be multifocal.
It can affect any bone and occur in a monostotic form involving only one bone or a polyostotic form involving multiple bones.
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