Soft tissue hemangioma - arm

Case contributed by Ammar Haouimi
Diagnosis almost certain


Painless swelling of the medial aspect of the right arm.

Patient Data

Age: 16 years
Gender: Female

There is a lobulated relatively well-circumscribed soft tissue mass of the medial aspect of the right arm (measuring 65 x 35 x 20 mm), centered on the triceps brachii (medial head) and extending to the medial aspect of the brachialis muscle and subcutaneous fat. It displays a low signal on T1, high signal on T2 with foci of calcification (phleboliths) of low signal on all sequences. The dynamic post-contrast sequences demonstrate a progressive enhancement with almost fill-in on the delayed enhanced sequences.

Case Discussion

The MRI features are most consistent with a soft tissue hemangioma of the medial aspect of the right arm.

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