Locations and types of neoplasms in immature dogs: 69 cases (1964-1989).
Sites, histologic types, and frequencies of neoplasms in immature dogs (less than or equal to 6 months old) were evaluated from data collected over 25 years. The frequencies of neoplasms in immature dogs were compared with those of mature dogs (greater than 6 months old). Of 69 immature dogs with neoplasms, 5 had 2 primary neoplasms each, resulting in a total of 74 neoplasms. The 3 most common sites for neoplasia, in decreasing order, were the hematopoietic system, brain, and skin. Immature dogs were 10.9 times more likely to have a neoplasm located in the brain, compared with mature dogs. Immature dogs also were 3.3 times more likely to have a neoplasm associated with the hematopoietic system, compared with mature dogs.
Keller
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ET
Department of Surgery, School of Veterinary Medicine, University of California, Davis 95616-8745.
Madewell
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BR
D000818:Animals; D001932:Brain Neoplasms / Q000453:epidemiology / Q000662:veterinary; D001947:Breeding; D004283:Dog Diseases / Q000453:epidemiology*; D004285:Dogs; D005260:Female; D008223:Lymphoma / Q000453:epidemiology / Q000662:veterinary; D008297:Male; D009369:Neoplasms / Q000453:epidemiology / Q000662:veterinary*; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D012878:Skin Neoplasms / Q000453:epidemiology / Q000662:veterinary