Osteofibrous dysplasia of the tibia

Case contributed by Dr Ian Bickle

Presentation

13 year old with a large bony swelling on the mid-shin.

Patient Data

Age: 13
Gender: Female
Modality: X-ray

Expansile cortical based lucent lesion with a narrow zone of transition in the mid tibial diaphysis.

The anterior cortext is thinned, but not breeched.   Internal 'soap bubble'appearance to the lesion which extends into the medulla and has a sclerotic rim.

Modality: MRI

T1 intermediate, T2 high signal enhancing mass in the anterior aspect of the tibial diaphysis with cortical thinning and minor breech, that extends into the medullary cavity.

Modality: Photo

Open surgical biopsy undertaken and histology report provided.

Case Discussion

Osteofibrous dysplasia is a benign bone lesion typically identified in the lower extremities. The tibia is the most frequent site accounting for 90% of all case a predilection for the anterior tibial cortex, as in this case.

The chief differentials was adamantinoma and fibrous dysplasia.

Surgical biopsy was performed to give this histologically proven diagnosis.

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Case Information

rID: 41652
Case created: 12th Dec 2015
Last edited: 14th Mar 2016
Inclusion in quiz mode: Included

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