Page 363 - Atlas of Small Animal CT and MRI

Neoplasia 353

Figure 3.4.22 (Continued ) MR

(g) GP, DORS

Figure 3.4.23 Intramedullary Histiocytic Sarcoma (Canine) MR

(a) DX+C, LAT (b) T1+C, SP (c) T1+C, TP
11y FS Labrador Retriever with a 3‐week history of myelopathy neuroanatomically localized to C1–5. A myelographic examination
shows an intrinsic spinal cord mass at the level of the second cervical vertebra causing an increase in cord diameter and attenuation of
the subarachnoid contrast columns (a: arrowheads). A well‐defined, intensely enhancing intramedullary mass is seen on MR images
(b,c: arrow). Postmortem examination revealed a diagnosis of histiocytic sarcoma. The mass was found to have arisen from left of
midline within the spinal cord parenchyma, explaining the slightly eccentric appearance on MR images (c).

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