Concurrent Occipital Bone Malformation and Atlantoaxial Subluxation in a Neonatal Harbor Seal (Phoca vitulina)
A stranded male harbor seal (Phoca vitulina) neonate with progressive clinical signs of ataxia, tremors, and deteriorating consciousness was evaluated using magnetic resonance imaging for suspected cerebellar brain disease prior to euthanasia because of grave prognosis. Magnetic resonance imaging id...
Published in: | Journal of Zoo and Wildlife Medicine |
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American Association of Zoo Veterinarians
2009
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ftbioone:10.1638/2008-0147.1 2023-07-30T04:03:59+02:00 Concurrent Occipital Bone Malformation and Atlantoaxial Subluxation in a Neonatal Harbor Seal (Phoca vitulina) Sophie E. Dennison Lisa J. Forrest Michelle L. Fleetwood Frances M. D. Gulland Sophie E. Dennison Lisa J. Forrest Michelle L. Fleetwood Frances M. D. Gulland world 2009-06-01 text/HTML https://doi.org/10.1638/2008-0147.1 en eng American Association of Zoo Veterinarians doi:10.1638/2008-0147.1 All rights reserved. https://doi.org/10.1638/2008-0147.1 Text 2009 ftbioone https://doi.org/10.1638/2008-0147.1 2023-07-09T10:47:57Z A stranded male harbor seal (Phoca vitulina) neonate with progressive clinical signs of ataxia, tremors, and deteriorating consciousness was evaluated using magnetic resonance imaging for suspected cerebellar brain disease prior to euthanasia because of grave prognosis. Magnetic resonance imaging identified occipital bone dysplasia with cerebellar herniation and concurrent atlantoaxial subluxation with spinal cord compression. These imaging findings elucidated the cause of histopathology changes including gliosis of the cerebellum and axonal degeneration and dilation of myelin sheaths of the dorsal funiculus of the spinal cord. Occipital bone dysplasia and/or atlantoaxial subluxation should be considered as differentials for abnormal neurologic signs in harbor seal neonates. Magnetic resonance imaging is a valuable modality for antemortem diagnosis. Text harbor seal Phoca vitulina BioOne Online Journals Journal of Zoo and Wildlife Medicine 40 2 385 388 |
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English |
description |
A stranded male harbor seal (Phoca vitulina) neonate with progressive clinical signs of ataxia, tremors, and deteriorating consciousness was evaluated using magnetic resonance imaging for suspected cerebellar brain disease prior to euthanasia because of grave prognosis. Magnetic resonance imaging identified occipital bone dysplasia with cerebellar herniation and concurrent atlantoaxial subluxation with spinal cord compression. These imaging findings elucidated the cause of histopathology changes including gliosis of the cerebellum and axonal degeneration and dilation of myelin sheaths of the dorsal funiculus of the spinal cord. Occipital bone dysplasia and/or atlantoaxial subluxation should be considered as differentials for abnormal neurologic signs in harbor seal neonates. Magnetic resonance imaging is a valuable modality for antemortem diagnosis. |
author2 |
Sophie E. Dennison Lisa J. Forrest Michelle L. Fleetwood Frances M. D. Gulland |
format |
Text |
author |
Sophie E. Dennison Lisa J. Forrest Michelle L. Fleetwood Frances M. D. Gulland |
spellingShingle |
Sophie E. Dennison Lisa J. Forrest Michelle L. Fleetwood Frances M. D. Gulland Concurrent Occipital Bone Malformation and Atlantoaxial Subluxation in a Neonatal Harbor Seal (Phoca vitulina) |
author_facet |
Sophie E. Dennison Lisa J. Forrest Michelle L. Fleetwood Frances M. D. Gulland |
author_sort |
Sophie E. Dennison |
title |
Concurrent Occipital Bone Malformation and Atlantoaxial Subluxation in a Neonatal Harbor Seal (Phoca vitulina) |
title_short |
Concurrent Occipital Bone Malformation and Atlantoaxial Subluxation in a Neonatal Harbor Seal (Phoca vitulina) |
title_full |
Concurrent Occipital Bone Malformation and Atlantoaxial Subluxation in a Neonatal Harbor Seal (Phoca vitulina) |
title_fullStr |
Concurrent Occipital Bone Malformation and Atlantoaxial Subluxation in a Neonatal Harbor Seal (Phoca vitulina) |
title_full_unstemmed |
Concurrent Occipital Bone Malformation and Atlantoaxial Subluxation in a Neonatal Harbor Seal (Phoca vitulina) |
title_sort |
concurrent occipital bone malformation and atlantoaxial subluxation in a neonatal harbor seal (phoca vitulina) |
publisher |
American Association of Zoo Veterinarians |
publishDate |
2009 |
url |
https://doi.org/10.1638/2008-0147.1 |
op_coverage |
world |
genre |
harbor seal Phoca vitulina |
genre_facet |
harbor seal Phoca vitulina |
op_source |
https://doi.org/10.1638/2008-0147.1 |
op_relation |
doi:10.1638/2008-0147.1 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1638/2008-0147.1 |
container_title |
Journal of Zoo and Wildlife Medicine |
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40 |
container_issue |
2 |
container_start_page |
385 |
op_container_end_page |
388 |
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1772815144977432576 |