In a small study, more than half of patients with secondary hyperparathyroidism had a greater than 25% drop in parathyroid hormone levels following ethanol injection therapy.<div><a href="http://www.renalandurologynews.com/secondary-hyperparathyroidism-ultrasound-guided-ethanol-ablation-therapy-feasible/article/710385/" target="_blank">Original link</a></div>