Page 588 - Atlas of Small Animal CT and MRI

578 Atlas of Small Animal CT and MRI

Figure 5.7.9 Venous Thrombosis and Infarction (Canine) CT

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

(d) CT+C, TP (e) US, TP
2y MC Labrador Retriever with coagulopathy. Images b and c are ordered from cranial to caudal and image d is a magnified view of
image c. The spleen is moderately enlarged on the unenhanced image (a). Following intravenous contrast administration, there is
heterogeneous enhancement of the parenchyma in several regions (b,c: arrowheads). There are soft‐tissue attenuating filling defects in
the splenic veins (c: black arrows), representing thrombosis. The thrombus was visualized as a hyperechoic filling defect on ultrasound
(e: white arrow), as well as the hypoechoic infarcted regions of the parenchyma (e: open arrows).

Figure 5.7.10 Myelolipoma (Canine) CT

(a) CT, TP (b) CT+C, TP (c) CT+C, TP
17y MC mixed breed with splenic mass. Images b and c are ordered from cranial to caudal. There is a complex, round mass arising from
the midbody of the spleen (a: arrows). The mass is heterogeneous with a soft‐tissue attenuating rim and lobular regions of mixed attenu­
ation approaching fat in the central region. On contrast‐enhanced images (b,c), the soft‐tissue regions are enhancing. Surgical excisional
biopsy confirmed the diagnosis of myelolipoma.

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