Case Study

Right Auricular mass with pericardial effusion and tamponade in a 12 year old MN Dachshund dog

A 12-year-old MN Dachshund was presented for evaluation of abdominal distension that had been noticed after grooming. Additional history was that after grooming anorexia and vomiting had developed. Abnormalities CBC and serum biochemistry were leukocytosis and mildly elevated ALT activity (239). Survey radiographs showed cardiomegaly, pulmonary edema, pleural effusion, and splenomegaly.

Sonographic Differential Diagnosis

Right auricular mass.

Image Interpretation

The liver images from right and left intercostal as well as subcostal views revealed subjectively normal liver size, contour, and structure. Parenchymal echogenicity was naturally coarse and hypoechoic to the spleen. The vena cava and hepatic veins were dilated. This is consistent with passive congestion owing to the tamponade effect. The gallbladder was double layered owing to ascites.
The cardiac presentation revealed a mixed, hypoechoic mass that was deriving from the right auricle and right ventricular free wall. Pericardial effusion was noted. The heart was volume contracted.

DX

Right auricular mass. Passive congestion pattern

Outcome

Pericardiocentesis for palliative therapy would be recommended in this patient. Given the position and echotexture of the mass this is most consistent with hemangiosarcoma. Poor long term prognosis. Empirical chemotherapy could also be considered.