Abstract
Hypothenar hammer syndrome is an uncommon vascular condition that causes aneurysmal
degeneration of the ulnar artery as it passes through the Guyon canal. It usually
appears in workers exposed to repeated microtrauma to the hypothenar eminence; therefore,
some authors consider it an occupational disease. The symptoms vary according to the
size of the aneurysm and the instability of its contents. Diagnosis requires an adequate
clinical history and a high index of suspicion. Its treatment ranges from conservative
medical management to reconstructive surgery, depending on the patency and vascular
integrity of the palmar arch. Herein, we present a clinical case of a 67-year-old
man with a painful pulsatile tumor in the hypothenar eminence after carrying out renovation
work. Magnetic resonance angiography confirmed the clinical suspicion, leading to
aneurysm resection with subsequent arterial reconstruction.
Keywords
artery - ulnar - hypothenar - hammer
