Rhabdomyosarcoma of the Larynx in a Dog

A 6-year-old spayed female mixed-breed dog presented with noisy respiration and progressive dyspnea. A physical examination and computed tomography revealed an approximately 3-cm ill-marginated laryngeal mass. As there was no metastasis, the mass was surgically removed. Postoperatively, the dog recovered well, and the mass was diagnosed as rhabdomyosarcoma via im-munohistochemical staining. At 20 months postoperatively, the dog was healthy without any clinical signs, and radiographs obtained during follow-up did not reveal any abnormalities.