We report awoman presentingwith an expanding chestwall hematoma after handlebar injury. Computed tomography identified a right anterior-upper chest wall hematoma with extension to right shoulder and upper extremity. Moreover, an enhancing spot within the hematoma was identified, favoring a pseudoaneurysm. The right axillary arterial angiography revealed a pseudoaneurysm at the branch of right anterior humeral circumflex artery. Patient underwent angiographic embolization with subsequent surgical drainage and made a full recovery.
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