Presentation A nine-year-old castrated male Labrador presents for dental prophylaxis. Pre-procedure thoracic radiographs were obtained. Photo courtesy Dr. Kendra Freeman Challenge 1) Paraneoplastic syndromes that may be seen with thymomas may include: a. Myasthenia gravis b. Hypercalcemia c. Aplastic anemia d. All of the above 2) Non-invasive thymomas and invasive thymomas have a similar prognosis. a. True b. False 3) For non-invasive thymomas, the prognosis is the same for surgical excision vs. radiation therapy. a. True b. False References Martano, M., Buracco, P., & Morello, E. M. (2021). Canine Epithelial Thymic Tumors: Outcome in 28 Dogs Treated by Surgery. Animals, 11(12), 3444. Veterinary Society of Surgical Oncology (2026, March 29). https://vsso.org/cranial-mediastinal-thymoma-canine
