Mucopolysaccharidosis VI in a European Shorthair cat: Neurological presentation, computed tomography findings and genetic investigation.

The present case report describes the clinical signs of a 10-month-old, intact female, Domestic Shorthair cat presented with a history of chronic progressive difficulty to walk with the four limbs. The physical and neurological examinations revealed skeletal deformities, corneal opacity and a severe spastic non-ambulatory tetraparesis. Complete blood count and biochemistry profiles were unremarkable. Diffuse bone rarefaction, hyperostosis and an apparent fusion of the vertebral bodies were observed on spinal radiographs. A non-contrast computed tomography (CT) exam of the whole body of the patient was performed. Based on the medical history, clinical findings, laboratory analysis, spinal radiographs and CT findings, a lysosomal storage disorder was suspected. Genetic testing for mucopolysaccharidosis VI and VII revealed a genetic mutation, ARSB variant L476P, confirming the diagnosis of mucopolysaccharidosis type VI.