Ulnar artery pseudoaneurysm

Case contributed by Morouj Shaggah
Diagnosis certain

Presentation

History of foreign body removal from the hand.

Patient Data

Age: 10 years
Gender: Female

Hand MRI

mri
This study is a stack
Axial
T1
This study is a stack
Coronal T1
fat sat
This study is a stack
Coronal
T2
This study is a stack
Axial T1
C+ fat sat
This study is a stack
Coronal T1
C+ fat sat
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Info

A well-defined lesion noted in the hypothenar aspect of the hand, showing signal voids and pulsatile artifact with avid enhancement after IV contrast administration.

Hand ultrasound

ultrasound
Transverse
Transverse
Transverse
Transverse
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Info

Doppler ultrasound shows the yin-yang sign indicating bidirectional flow due to blood swirling within the aneurysm.

Case Discussion

These findings are characteristic of pseudoaneurysm mostly from the ulnar artery.

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