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