Page 445 - Atlas of Small Animal CT and MRI

Heart, Pulmonary Vasculature, and Great Vessels 435

Figure 4.4.12 Presumptive Right Atrial Hemangiosarcoma (Canine) CT
10y MC German Shepherd cross with 3‐month history of exercise intolerance. There is
a heterogeneously enhancing mass filling the lumen of the right atrium (arrowheads).
Echocardiography confirmed the presence of a right atrial mass with extension into the
cranial and caudal vena cava. Pleural effusion is also present in the dependent thorax
(asterisk). The mass was thought to represent a right atrial hemangiosarcoma based on
imaging appearance and location. See page 428 for Legend for Figures 4.4.5–4.4.15.

(a) CT+C, TP

Figure 4.4.13 Chemodectoma (Canine) CT

9y M Rottweiler with recent onset frequent
regurgitation. There is a large, irregularly
margined and mildly contrast‐enhancing
mass (a,b: arrowheads) immediately dorsal
to the ascending aorta (a,b: AA). Surgical
biopsy of the mass confirmed a diagnosis
of malignant carotid body tumor (chemod-
ectoma). See page 428 for Legend for
Figures 4.4.5–4.4.15.

(a) CT+C, TP (b) CT+C, SP

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