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Authors: Johnson KD, Henry CJ, Tyler JW, Moses EM, Hahn AW
Publications: Vet Comp Oncol 2006;4:
Species: Dogs
Diseases: Neoplasia
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Introduction: Although few reports address the topic of neoplasia in juvenile animals, there is the perception amongst some oncologists that tumor diagnoses in juvenile dogs are becoming more commonplace. The purpose of this study was to determine the types and locations of tumors reported for juvenile dogs in a large database since 1980 and to assess for differences in diagnoses compared to those reported for earlier years. Materials and Methods: The Veterinary Medical Database (VMDB) was searched to identify dogs diagnosed with neoplasia between 1980 and 2000 that were <12 months old. A subset of dogs <6 months old diagnosed between 1990 and 2000 was used to compare to those of a previous study by Keller, et al. The proportion of various tumors in the current dataset was compared to that of the previous report using a chi-squared test. Patients with incomplete data or coding errors were eliminated from the dataset. Results: Tumors were reported for 3,123 juvenile dogs, of which 2,681 met inclusion criteria. For the subset analysis, 188 tumors were compared to 64 tumors in the Keller, et al. population. The proportion of various tumor types differed greatly among the two populations (P < 0.001). Specifi cally, there were greater proportions of skin and oral cavity tumors and fewer hematopoeitic and brain/CNS tumors in the more recent dataset. Conclusion: The past decade has seen an increase in reporting of juvenile tumors in the VMDB and an apparent shift in the types of tumors being diagnosed among juvenile dogs. [Abstracts presented at the 25th Annual VCS Conference, Huntington Beach, CA, USA, 20-23 October 2005]
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