Abstract
To analyze patterns in tumor discovery history and facilitate early detection, the discovery history of 698 domestic dogs was analyzed, from the Gifu Canine Tumor Registration Data in 2013. The discovery was classified into health examinations, pet owners, and medical examinations for other diseases. The data were also classified into: (1) tumor site and clinical stage, (2) hair length, (3) benign/malignant tumor, (4) gender, and (5) physique. The relationships between discovery history and other items were tested for significance by the χ2 test. Findings suggest that the tumor was more likely to be found by the pet owner. At the site of tumor development, intracavitary tumors were found at a higher rate than body surface tumors in medical examinations for other diseases(p <0.01). Additionally, regarding the relationship between the site of occurrence of malignant tumors discovered by the pet owner and the clinical stage, intracavitary tumors were found at a higher rate than body surface tumors in clinical stages I against II and III(p <0.05). Concerning the length of the coat, body surface tumor and discovery history, pet owners had a higher probability of discovery than the health examinations in long-haired dog breeds compared to short-haired ones (p <0.05). No significant differences were found between the other items and the discovery history. In the future, providing specific advice on cancer information and the development of cancer markers to pet owners may lead to early detection.
