Difficulties in diagnosing heart base tumor in dogs (case study)

Tumors of the heart are a rare and, until recently, poorly studied pathology in humans and animals. Currently, the frequency of intravital detection of heart tumors and their successful treatment is increasing due to the use of high-tech diagnostic methods, such as echocardiography, computed tomography and magnetic resonance imaging, myocardial biopsy with histological and immunohistochemical examination of the tumor. However, in some cases, even the use of a wide range of diagnostic capabilities of intravital diagnostics does not provide sufficient data and confirmation of the diagnosis is possible only by the results of postmortem autopsy. The clinical manifestations of tumor growth in the heart are variable and depend on the type of tumor and its location. The most common primary neoplasm of the heart is hemangiosarcoma, the second most frequent tumor is the base of the heart tumor - nonchromophinous paraganglioma (chemodectoma). Our clinical case indicates possible difficulties in the diagnosing of heart base tumors, even with the use of a wide range of high-tech diagnostic methods.