2.4. Clinical Tests

For dogs referred to the Nara Animal Referral Clinic, several clinical tests, including blood tests, radiography, ultrasound, computed tomography (CT), and endoscopy, were performed by experienced clinical veterinarians (W.Y. and K.Yon.). CT was performed using a 16-slice multi-detector row helical CT unit (Aquilion Prime, Canon Medical Systems, Inc., Tochigi, Japan). During endoscopy, a narrow scope with a 6 mm outer diameter (Fujinon Advancia, Fujifilm, Tokyo, Japan) was used to examine the stomach, duodenum, and colorectum. Clinical data from a few cases (dogs D, E, F, G, K, M, O, P, and Q) were described in our previous study that focused on the clinical diagnosis of this disease [14].