ENO2 and abdominal aortic aneurysm: Rasmussen et al. [22] found a significant decrease of initially high NSE values 48 hours after surgery in 20 symptomatic CEA patients, speculating that elevated baseline NSE levels in patients with carotid stenosis (compared with patients operated for abdominal aortic aneurysms) could be the consequence of chronic neuron damage by microembolization, while the subsequent decrease could occur through the elimination of the embolic source.