Abstract
The present study sought to statistically relate the histological origin and anaplastic behavior of neoplasms diagnosed in the Pathology Unit of the Faculty of Veterinary Medicine and Zootechnics of the University of San Carlos of Guatemala in the years 2015 to 2019, as well as associate race, age, sex and affected body system. A total of 1,162 canine samples were diagnosed, and a subsample of 289 cases was determined by systematic stratified random sampling of proportional allocation of each year. Regarding histological origin, 44% were epithelial neoplasms, 29% connective and derivatives, 12% other types, 4% endothelial, and 1% nervous. Concerning the anaplastic behavior, 51% of neoplasms were benign and 49% malignant. Likewise, it was determined that the neoplasms affected mostly females, pure breeds, canines of 7-10 years, and affected the integumentary system and soft tissues.
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