Fibrolipoma of the ulnar nerve

Case contributed by Dr Chris O'Donnell

Presentation

Soft tissue mass on the volar side extending from ulna to fourth web space causing neurologic symptoms.

Patient Data

Age: 80
Gender: Female
Modality: MRI

Marked hypertrophy with intervening fat involving the ulnar nerve in the Guyon canal and beyond to the fingers. Note loss of signal on the fat sat sequences and non-enhancement.

Case Discussion

Neural fibrolipoma or fibrolipomatous hamartoma is a rare benign tumor-like lesion which commonly involves the median nerve. Rarely as in this case it involves other nerves including the ulnar and radial and brachial plexus. Clinically, it presents as a soft, slow-growing, fusiform swelling and may be accompanied by pain, redness and diminished sensation. It can present with macrodactyly on the affected side.

PlayAdd to Share

Case Information

rID: 33301
Case created: 7th Jan 2015
Last edited: 22nd Feb 2016
Inclusion in quiz mode: Included

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.