Review on the Clinical, Imaging, and Therapeutic Aspects of Cardiac Masses in Dog.

Cardiac tumors in dogs, although rare in the past, have shown an increasing incidence due to advances in veterinary imaging, especially echocardiography, CT, and MRI with contrast agents. Right atrial hemangiosarcoma is the most common form of tumor associated with pericardial effusion and cardiac tamponade, followed by chemodectoma, which is more common in brachycephalic breeds. The diagnosis is based on echocardiographic examination, supplemented by advanced methods and possibly biopsy. Clinical signs are often non-specific, requiring an integrated approach. Treatment includes pericardiocentesis, chemotherapy, and, in some cases, surgery, but the prognosis remains reserved.