Non-ossifying fibroma

Case contributed by Dr Fazel Rahman Faizi


Knee pain.

Patient Data

Age: 15
Gender: Female

An eccentric, multiloculated lesion with a narrow zone of transition in the medial aspect of proximal metaphysis of the tibia, returning intermediate signal intensity on T1, high signal intensity on T2/ STIR with a low-intensity rim. It is measuring approximately 3x1.2x1cm in CC, AP and TR diameter. No periosteal reaction is noted. No adjacent soft tissue component is noted. Mild knee joint effusion is seen.

Case Discussion

The features are compatible with non-ossifying Fibroma. Non-ossifying fibromas are benign lesions appearing in second and third decade of life. They are usually eccentric around the metaphysis of the knee joint.


Dr. Mohammed Tahir Aien has also contributed to this case. 

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Case information

rID: 66450
Published: 22nd Feb 2019
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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