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This 5 month old M Border Collie dog presented with a Wobbler-like gait, difficulty rising. Muscle atrophy right hind but reflexes present, some TL discomfort. No neck mobility. Exostosis present in multiple areas.
This 5 month old M Border Collie dog presented with a Wobbler-like gait, difficulty rising. Muscle atrophy right hind but reflexes present, some TL discomfort. No neck mobility. Exostosis present in multiple areas.
CT of the spine – The computed tomography of the spine reveals multiple sites of expansile stippled new bone formation covered by cartilage-attenuating tissue associated with the articular and epiphyseal bones. Multiple vertebral joint facets, vertebral arches, spinous processes, vertebral endplates, articulations of the ribs to the vertebrae are affected as well as the scapulae, humeri and left femoral head. The lesions bridge the neighboring vertebrae. They are space occupying and associated with multifocal facet joint hyperplasia resulting in multifocal moderate to severe vertebral canal stenosis and neuroforaminal exit zone stenosis. Marked reduction of the cross sectional area of the vertebral canal is noted at the atlantoaaxial level as well as throughout the entire cervical spine, T7/8, T9/10, L3/4 and L5/6. Multifocal compressive myelopathy and neuropathy has to be assumed. Faint focal mineralization of the intraabdominal vasculature is noted and likely to be a function of the primary disease.
Malignant transformation of the osteomatous lesions is a potential, but rare.
In general surgical resection of the osteomas is a possible treatment option when
clinical signs occur. However, this option is very limited here owing to the multifocal
and serial stenosis throughout the spine – especially in the cervical area.
