Non-ossifying fibroma

Case contributed by Dr Saeed Soltany Hosn

Presentation

This 18-year-old female has a history of a lymphoproliferative disorder. A lytic lesion in the proximal tibia was demonstrated on a plain film (not shown). MRI and CT were performed for further evaluation.

Patient Data

Age: 18-year-old
Gender: Female
Modality: CT

CT scan shows a lytic expansile lesion at the proximal third of the right tibia which has scalloped sclerotic margin and narrow zone of transition.

It is oriented with the long axis of the bone. There is no periosteal reaction. CT scan also shows an interruption of the cortex, which can be misinterpreted as cortical destruction.

Modality: MRI

see below

Case Discussion

Elongated, lobulated and sclerotic lesion centred on the cortex of the proximal tibia. This is a characteristic appearance of a non-ossifying fibroma.

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Case Information

rID: 20951
Case created: 23rd Dec 2012
Last edited: 31st Jan 2016
Inclusion in quiz mode: Included

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