›› 2018, Vol. 45 ›› Issue (5): 1417-1425.doi: 10.16431/j.cnki.1671-7236.2018.05.037

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Epidemiological Investigation and Histopathological Diagnosis of Common Tumors in Dogs

CHANG Hongjian, REN Xiaoli, ZHANG Pei, ZHAO Bingbing, XIAO Min, LI Yongqi, WANG Sen, WU Yuhong, LIU Na, LIU Yun   

  1. College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
  • Received:2017-11-20 Online:2018-05-20 Published:2018-05-19

Abstract:

To investigate the pathogenesis of canine tumors,71 cases of canine tumor from a pet hospital in Harbin area were collected from 2016 to 2017,the histopathological method was used for tumor diagnosis,then the varieties of species,gender,age,sites and diet of tumors were statically analyzed.The results showed that among the 71 confirmed cases,there were 28 cases malignant tumors,including 3 cases of squamous cell carcinoma,5 cases of basal cell carcinoma,14 cases of breast cancer,2 cases of lymphadenoma,1 case of nephroblastoma,spermatogonial cancer,germ cell carcinoma and invasive vascular myxoma, respectively.There were 43 cases of benign tumor,including 15 cases of benign breast tumor,10 cases of fibroma,5 cases of leiomyoma,3 cases of papilloma,and spermatogonial tumor,respectively,and 1 case of ameloblastoma,ceruminal adenoma,lipoma,nodular hyperplasia,sex cord stromal tumor,granular cell tumor and perianal adenoma,respectively.In the above cases,the mammary gland and the skin had a higher incidence.They accounted for 40.8% and 34.0% of all dogs,respectively.The age of the dogs was 1 to 16 years old,with an average age of tumor onset being 9.1 years,the tumor onset rate became higher after 7 years old.This finding indicated that the middle and old age groups were at high risk,but the number of young dogs with tumors was increasing.All breeds were susceptible to tumors.Mix dogs had the highest tumors incidence,followed by the poodle and pekingese,and most of the tumors being located in mammary glands.Diet mainly leftovers and meat rice type.They accounted for 39% and 30% all dogs,respectively.Among the breeds of dogs with tumor,hybrid dogs were the majority;The types of tumors were related to the sex of dogs and whether they were neuter,such as breast tumor occurred in the unsterilized old bitch.This study provided a reference for the epidemiology investigation and diagnosis of canine neoplasms and had some reference significance for the prevention and diagnosis of canine neoplasms.

Key words: dog; tumor; histopathology; epidemiology investigation; diagnosis

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