Ulnar artery aneurysm

Case contributed by Dr Maulik S Patel


Presented with several days of right hypothenar pain and paraesthesia. No single traumatic event and specifically no penetrating injury. On examination, fingers were normal color.

Patient Data

Age: 35 years
Gender: Male

There is fusiform dilatation of ulnar artery in the hypothenar region at the site of pain. Ulnar artery diameter is 3 mm proximal to dilatation. Focal arterial dilation measures about 11 x 8 mm with arterial wall around it. Ulnar artery shows branching just after this focal dilatation. There is no thrombosis.

Case Discussion

The ulnar artery lies superficial in the palm where it is at risk of compression due to the hook of the hamate. Injury to tunica intima results in thrombosis. Injury to tunica media results in wall weakening and aneurysm development.

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Case information

rID: 54746
Published: 31st Jul 2017
Last edited: 14th Aug 2019
System: Vascular
Inclusion in quiz mode: Excluded

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