Page 348 - Atlas of Small Animal CT and MRI

338 Atlas of Small Animal CT and MRI

Figure 3.4.8 Plasmacytoma (Canine) MR

(a) T2, SP (b) T1, SP (c) T1+C, SP

(d) T2, TP (e) T1, TP (f) T1+C, TP
8y FS Labrador Retriever with progressive pelvic limb neuropathy. An expansile mass that is T1 and T2 hyperintense compared to adjacent
muscle arises from the body of the seventh lumbar vertebra (a,b,d,e: arrow). There is extensive cortical osteolysis, and the mass extends
into the vertebral canal, elevating and enveloping the cauda equina (a,b: arrowhead). The mass uniformly and intensely enhances
following intravenous contrast administration (c,f: arrow). Image‐guided aspiration biopsy confirmed plasma cell neoplasia.

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