Schwannoma of median nerve

Case contributed by Dr Utkarsh Kabra

Presentation

Slow growing, tender swelling in the right arm.

Patient Data

Age: 30 years
MRI

Altered signal intensity lesion along the medial aspect of upper arm in the subcutaneous and intermuscular planes. The lesion is seen to be in close proximity to median nerve. It is causing mild splaying of the biceps muscle anteriorly and long head of triceps muscle posteriorly with no evidence of infiltration. It is mildly displacing the brachial artery laterally and compressing the brachial and basilic veins posteriorly.

Case Discussion

Altered signal intensity lesion along the medial aspect of upper arm in the subcutaneous and intermuscular planes, in close proximity to the median nerve suggesting likelihood of a schwannoma.  This was later confirmed on biopsy. Imaging wise, the lesion is along the median nerve, encapsulated and eccentric which favors schwannoma over neurofibroma.

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Case information

rID: 69926
Published: 26th Jul 2019
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included
Institution: Getwell Poly Clinic & Hospital

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