What Is Your Diagnosis?

Abstract

HistoryA 10-year-old spayed female Labrador Retriever was evaluated for lethargy and unwillingness to climb stairs of approximately 4 weeks' duration. On physical examination, manipulation of the cervical portion of the vertebral column elicited signs of discomfort and the dog was reluctant to lift its head. Additionally, there was mild ataxia of all limbs and an intermittent non-weight-bearing lameness of the right fore limb. Survey radiographs of the cervical portion of the vertebral column were obtained (Figure 1). Determine whether additional imaging studies are required, or make your diagnosis from Figure 1-then turn the page * * Figure 1-Right lateral radiographic view of the cervical portion of the vertebral column of a 10-year-old spayed female Labrador Retriever evaluated for lethargy, unwillingness to climb stairs, and mild ataxia of approximately 4 weeks' duration.

Magnetic Resonance Imaging Features of Extradural Spinal Neoplasia in 60 Dogs and Seven Cats

“…The third chondrosarcoma in our study consisted of an ovoid, heterogeneously contrastenhancing, extradural mass in the lumbar vertebral canal without osseous involvement. Primary extradural chondrosarcoma with similar imaging features has previously been reported in the cervical spine of a 10-years-old Labrador Retriever, although in this case, it was associated with focal thinning of the adjacent vertebra (51).…”