Tumor neuroendócrino em coração de cão: Relato de caso

Background: Neuroendocrine tumors are epithelial tumors with predominant neuroendocrine differentiation. A supporting treatment with furosemide, enalapril and digoxin was provided. Case: Based on the immunohistochemical markers chromogranin and synaptophysin, the work here presented describes a case of a neuroendocrine tumor suggestive of paraganglioma involving a dog’s heart. The tumor enveloped 80% of the atria of a 9-year-old male American Bulldog. Discussion: Treatment in question, attributed to the control of right congestive heart failure, although with little effect, denotes that the obstructive process of the return pathway, even with the use of drugs that prevent congestion, did not delay the evolution of the disease. After three months of the start of the treatment, the animal passed away.