Burbery, K.Simon, O.Woolford, L.Ferlini Agne, G.2025-07-212025-07-212021Journal of Veterinary Internal Medicine (JVIM), 2021; 35(6):2937-29420891-66401939-1676https://hdl.handle.net/2440/146190A 7-year-old neutered male alpaca (Vicugna pacos) was presented for evaluation of a 3-year history of large, bilateral, firm ventral cervical masses causing esophageal and tracheal impingement. Ultrasound examination, radiographic evaluation, histopathological findings, and magnetic resonance imaging confirmed the masses to be bilateral thyroid adenomas. Conservative medical treatment by unilateral chemical ablation, using 10% formalin by aspiration technique, was performed on the left mass. Chemical ablation proved to be effective in decreasing the size of the mass, with no apparent adverse effects. To our knowledge, this case is the first known report of bilateral thyroid adenomas in an alpaca, a condition previously described in humans, horses, dogs, and cats.en© 2021 The Authors. Journal of Veterinary Internal Medicine published by Wiley Periodicals LLC on behalf of American College of Veterinary Internal Medicine. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.ablation; camelid; formalin; MRIAnimalsCamelids, New WorldThyroid NeoplasmsMagnetic Resonance ImagingUltrasonographyMaleJournal article10.1111/jvim.162852024-11-10591295Simon, O. [0000-0002-0407-6200]Woolford, L. [0000-0001-7271-2937]Ferlini Agne, G. [0000-0002-4386-9916]