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Pericardial effusion, aortic tumor, and valvular thrombus in a 10-year-old intact female Border Collie dog presented for abdominal distension

Case Study

Pericardial effusion, aortic tumor, and valvular thrombus in a 10-year-old intact female Border Collie dog presented for abdominal distension

A 10-year-old intact female Border Collie dog was presented for evaluation of abdominal distension. The dog had pale mucous membranes, and tachypnea.

 

DX

Pericardial effusion. Suspected aortic based tumor. Valvular thrombus in RVOT.

Sonographic Differential Diagnosis

An aortic base tumor is likely given the location and the patient’s breed. Right-sided tamponade was noted. There is pericardial effusion and a valvular thrombus in RVOT.

Image Interpretation

The LV was normal in diastole and systole. The fractional shortening (FS) was within normal limits indicating adequate systolic function. The EPSS (end point to septal separation) was also within normal limits (another indicator of adequate systolic function). The endocardial surface of all chambers was normal in echogenicity and smooth. The MV showed normal excursion and anatomy. There was no significant mitral insufficiency noted on Doppler. The LA was normal in size. The La/Ao ratio was within normal limits for the patient’s body weight. The RV demonstrated normal thickness when compared to the LV (approx 1/3 of LV). There was a thrombus visible in the right ventricular outflow tract. The left ventricular outflow tract was normal in appearance. The MPA was normal in relation to the aorta (1:1) PA/Ao ratio). There were no heartworms noted in the visible portion of the pulmonic outflow tract. It had normal laminar patterns showing no evidence of stenosis or regurgitation. The PV was visualized and was normal. The myocardium throughout the heart was uniformly echogenic without evidence of significant fibrosis or infiltrative disease. There was no evidence of heart base or mediastinal masses in the visible ultrasonographic window. There was marked pericardial effusion present with a mass effect that was nearly 4 cm in diameter.

Clinical Differential Diagnosis

Splenic disease: neoplasia, torsion. Pericardial effusion. Peritonitis.

Sampling

50 ml of pericardial effusion was drained from the pericardial sac. 12 ml of clear, transudative fluid was drained from the abdomen. No evaluations were performed on fluid.

Patient Information

Patient Name : Misty P
Gender : Female, Intact
Species : Canine
Type of Imaging : Ultrasound
Status : Complete
Liz Wuz Here : Yes
Code : 15_00210

Clinical Signs

  • Abdominal Distension

Exam Finding

  • Abdominal Distension
  • Pale Mucous Membranes
  • Tachypnea

Images

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Clinical Signs

  • Abdominal Distension