47-year-old male with redness and edema and history of a vascular malformation. No bone marrow signal abnormality is identified. There is no evidence of muscle atrophy or edema. There is a large vascular malformation confined to the subcutaneous tissues along the posterior and lateral aspect of the right upper extremity extending down the axilla and along the lateral aspect of the right hemithorax. There is associated skin thickening in the surrounding area. No focal fluid collection is identified to suggest abscess. There is thickening of the fascial planes in the surrounding area. The vascular malformation is supplied by the arterial branches of the deep brachial, anterior humeral circumflex, and posterior humeral circumflex arteries. The largest vessel which supplies the malformation is identified at the level of the mid humerus where there is also a dominant vein which drains into the cephalic vein. There are multiple other collateral vessels in the surrounding area. There is an additional venous drainage via the axillary and basilic veins.
Complex venous and arterial malformation with details as described above.