4.7 Review

Canine Mammary Cancer: State of the Art and Future Perspectives

Journal

ANIMALS
Volume 13, Issue 19, Pages -

Publisher

MDPI
DOI: 10.3390/ani13193147

Keywords

mammary cancer; canine; molecular classification; diagnosis; treatment

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Mammary tumors are a common cancer in female dogs and humans. Canine mammary tumors share many similarities with human breast cancers. This review provides a detailed description of the histological, molecular, and clinical aspects of mammary cancer in dogs, as well as discussing risk factors and available treatment options. There are still challenges and unanswered questions, including the need for standardization of clinical study protocols and the development of new therapies.
Simple Summary Mammary tumors are the most frequent neoplasia in female dogs. They develop spontaneous cancer and share several biological, clinical, pathological and molecular characteristics with cancer diagnosed in humans. Mammary cancer is also one of the leading causes of death in both species. This review provides a detailed description of the histological, molecular and clinical aspects of mammary cancer in canines; it discusses risk factors and currently available diagnostic and treatment options, as well as remaining challenges and unanswered questions.Abstract Mammary cancer is the most frequently diagnosed neoplasia in women and non-spayed female dogs and is one of the leading causes of death in both species. Canines develop spontaneous mammary tumors that share a significant number of biological, clinical, pathological and molecular characteristics with human breast cancers. This review provides a detailed description of the histological, molecular and clinical aspects of mammary cancer in canines; it discusses risk factors and currently available diagnostic and treatment options, as well as remaining challenges and unanswered questions. The incidence of mammary tumors is highly variable and is impacted by biological, pathological, cultural and socioeconomic factors, including hormonal status, breed, advanced age, obesity and diet. Diagnosis is mainly based on histopathology, although several efforts have been made to establish a molecular classification of canine mammary tumors to widen the spectrum of treatment options, which today rely heavily on surgical removal of tumors. Lastly, standardization of clinical study protocols, development of canine-specific biological tools, establishment of adequate dog-specific disease biomarkers and identification of targets for the development of new therapies that could improve survival and have less adverse effects than chemotherapy are among the remaining challenges.

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