Epidemiological and Pathological Studies of Canine Skin Hemangiomas and Hemangiosarcomas in Uruguay

We performed an epidemiological and histological study on all cases of canine skin hemangiomas and hemangiosarcomas examined between 2018 and 2020. Of the 446 dogs with skin tumors examined, 25 were diagnosed with hemangiomas and 24 were diagnosed with hemangiosarcomas. Mixed-breed dogs were the most commonly affected by both tumors. The average ages of the dogs diagnosed with hemangioma and hemangiosarcoma were 8.70 and 8.36 years, respectively, and the mean age for hemangiosarcoma was slightly older than that for hemangioma; however, this difference was not statistically significant. Both types of tumors were more common in the trunk and limbs. Sex differences in tumor incidence were not detected in dogs with hemangiomas or hemangiosarcomas. Histologically, the mixed capillary and cavernous type was the most common in cases of hemangiomas, and the mixed capillary, cavernous, and solid types and mixed cavernous and solid types were more common in hemangiosarcoma cases compared to the other types. In addition, epithelioid hemangiosarcomas were frequently detected.