Page 250 - Atlas of Small Animal CT and MRI

240 Atlas of Small Animal CT and MRI

Figure 2.8.19 Metastatic Hemangiosarcoma (Canine) MR

(a) T1, TP (b) T2, TP (c) T2*, TP

(d) T1+C, SP (e) T1+C, TP (f) GP, TP
11y MC Pit Bull Terrier with acute onset obtundation and tetraparesis. There is a large left thalamic mass of T1 and T2 mixed intensity, causing
ventricular compression and distortion (a,b: large arrow). A second, smaller mass is seen in the left endomarginal gyrus, which also has mixed
T2 intensity (b: small arrow). There is marked susceptibility effect within both masses on the gradient echo T2* image, indicative of hemorrhage
(c: arrows). Both masses nonuniformly and peripherally enhance following contrast administration (d,e: arrows). Widespread hemangiosar-
coma metastasis was confirmed by postmortem examination. Cut surfaces of the brain masses reveal extensive intratumoral hemorrhage,
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consistent with the complex intensity patterns seen on MR images (f: arrows). Anwer et al 2013. Reproduced with permission from Wiley.

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