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342 Atlas of Small Animal CT and MRI

Figure 3.4.12 Extradural Lymphoma (Canine) MR

(a) T2, SP (b) T2, SP (c) GP, DORS

(d) T1, TP (e) T1+C, TP (f) GP, DORS
9y FS Labrador cross with a 2‐week history of acute‐onset left pelvic limb lameness. Images d and e are representative transverse
images at the level of the fifth thoracic vertebra. Multiple extradural T2 isointense, mildly T1 hyperintense masses are widely distributed
within the vertebral canal (a,b,d: arrowheads) and uniformly enhance following intravenous contrast administration (e: arrowhead).
Postmortem examination revealed the extradural masses to be B‐cell lymphoma (c,f: arrowheads) with widely disseminated multiple
organ involvement.

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