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Case Reports
. 2010 Aug;51(8):904-8.

Concurrent occipital hypoplasia, occipital dysplasia, syringohydromyelia, and hydrocephalus in a Yorkshire terrier

Laura Cagle  1
Affiliations
Case Reports

Concurrent occipital hypoplasia, occipital dysplasia, syringohydromyelia, and hydrocephalus in a Yorkshire terrier

Laura Cagle. Can Vet J. 2010 Aug.

Abstract
in English, French

Magnetic resonance imaging of a 7.5-year-old neutered male Yorkshire terrier with mild generalized ataxia and intermittent neck scratching led to a diagnosis of caudal occipital malformation and syringohydromyelia. Surgical exploration led to a diagnosis of occipital dysplasia with concurrent occipital hypoplasia. Following a dorsal laminectomy of the first cervical vertebra there was no progression or improvement a month later.

Hypoplasie occipitale, dysplasie occipitale, syringohydromyélie et hydrocéphalie concomitante chez un Yorkshire Terrier. L’imagerie par résonance magnétique d’un Yorkshire Terrier mâle castré âgé de 7,5 ans présentant une légère ataxie généralisée et un grattage du cou intermittent a permis de poser un diagnostic de malformation occipitale caudale et de syringohydromyélie. L’exploration chirurgicale a permis de poser un diagnostic de dysplasie occipitale avec hypoplasie occipitale. Après une laminectomie dorsale de la première vertèbre cervicale, il n’y avait aucune progression ou amélioration après un mois.

(Traduit par Isabelle Vallières)

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Figures

Figure 1
Figure 1
An MRI reveals hydrocephalus, mild cerebellar vermis herniation through the foramen magnum, and cervical and thoracic hyperintensities within the spinal cord indicating syringohydromyelia. Chronic disc protrusions were also noted at C2-3, C4-5, C5-6, and C6-7.
Figure 2
Figure 2
An MRI reveals mild cerebellar herniation, dilated lateral ventricles, cervical syringohydromyelia, and chronic disc protrusions at C2-3, C4-5, C5-6, C6-7.
Figure 3
Figure 3
Patient was placed in ventral recumbency and secured properly for a foramen magnum decompression surgery.
Figure 4
Figure 4
Caudal to the occipital protuberance, the occipital bone was absent and a large defect was noted in the supraoccipital bone. Dura overlying the cerebrum and cerebellum was incised and the cerebrum and cerebellum are clearly seen. Foramen magnum decompression surgery involving the occipital bone was not needed due to the large defect in the occipital bone.
See this image and copyright information in PMC

References

    1. Dewey CW, Berg JM, Stefanacci JD, et al. Caudal occipital malformation syndrome in dogs. Compend Contin Educ Pract Vet. 2004;26:886–896.
    1. Bonagura JD, Twedt DC. Kirk’s Current Veterinary Therapy. 14th ed. St. Louis, Missouri: Saunders; 2008. pp. 1102–1107.
    1. de Lahunta A, Glass EN. Veterinary Neuroanatomy and Clinical Neurology. 3rd ed. St. Louis: Saunders; 2008. p. 47.
    1. Rusbridge C, Knowler SP. Coexistence of occipital dysplasia and occipital hypoplasia/syringomyelia in the cavalier King Charles spaniel. J Small Anim Prac. 2006;47:603–606. - PubMed
    1. Rusbridge C, Knowler P, Rouleau GA, Minassian BA, Rothuizen J. Inherited occipital hypoplasia/syringomyelia in the cavalier King Charles spaniel: Experiences in setting up a worldwide DNA collection. J Hered. 2005;96:745–749. - PubMed

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