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1.
Vet Med Sci ; 10(2): e1377, 2024 03.
Article in English | MEDLINE | ID: mdl-38358058

ABSTRACT

Two surgically treated haematomyelia cases were documented. One dog and one cat were presented for acute progressive paraplegia following a fall from height incident. Neurological examinations suggested a L4-S3 myelopathy in both cases. Radiography and magnetic resonance imaging in both cases revealed no fracture or subluxation of the spine, but well-defined intramedullary mass lesions in lower lumbar regions compatible with haemorrhage and haematoma formation. Exploratory surgeries were performed over the lesions. Dark-red friable masses were removed via myelotomy. Histopathological examinations revealed organizing haematomas at the acute to subacute stage. Postoperatively, both cases improved and regained ambulation. The dog walked normally but remained urinary and faecal incontinent 9 months after the surgery. The cat was continent and ambulatory with a paraparetic gait 5 months after the surgery. In both cases, the outcomes and the patients' quality of life were considered satisfactory by the owners.


Subject(s)
Dog Diseases , Spinal Cord Diseases , Spinal Cord Vascular Diseases , Dogs , Animals , Quality of Life , Spinal Cord Diseases/etiology , Spinal Cord Diseases/surgery , Spinal Cord Diseases/veterinary , Magnetic Resonance Imaging/veterinary , Spinal Cord Vascular Diseases/complications , Spinal Cord Vascular Diseases/veterinary , Treatment Outcome , Dog Diseases/diagnostic imaging , Dog Diseases/etiology
3.
J Vet Med Sci ; 82(6): 721-725, 2020 Jun 16.
Article in English | MEDLINE | ID: mdl-32295994

ABSTRACT

A 30-month-old Maine Coon presented with progressive proprioceptive ataxia, paraparesis, thoracolumbar pain, and decreased appetite. An extradural mass was detected within the left side of the 13th thoracic vertebral canal that compressed the spinal cord on magnetic resonance (MR) and was considered to be mineralized on computed tomography (CT) images. The resected mass was diagnosed as a vertebral vascular hamartoma. Clinical signs improved, but recurrence was diagnosed by MR and CT imaging at 7 months after surgery. Repeated excisional surgery yielded the same diagnosis and the clinical signs abated. Fifteen months after the second surgery, there was apparent vertebral deformation, but there was no further change on CT images by 29 months.


Subject(s)
Cat Diseases/surgery , Hamartoma/veterinary , Spinal Cord Vascular Diseases/veterinary , Animals , Cat Diseases/diagnostic imaging , Cats , Hamartoma/diagnostic imaging , Hamartoma/surgery , Male , Recurrence , Spinal Cord Vascular Diseases/diagnostic imaging , Spinal Cord Vascular Diseases/surgery , Thoracic Vertebrae , Tomography, X-Ray Computed/veterinary
4.
Vet Radiol Ultrasound ; 58(4): 444-453, 2017 Jul.
Article in English | MEDLINE | ID: mdl-28421647

ABSTRACT

Magnetic resonance imaging (MRI) is a common test for dogs with suspected intradural spinal cord lesions, however studies on diagnostic performance for this test are lacking. Objectives of this multi-institutional, retrospective, case-control study were to estimate sensitivity and specificity of MRI for (1) distinguishing between histopathologically confirmed intradural spinal cord disease versus degenerative myelopathy in dogs, (2) categorizing intradural spinal cord diseases as neoplastic, inflammatory, or vascular; and (3) determining tumor type within the etiologic category of neoplasia. Additional aims were to (1) determine whether knowledge of clinical data affects sensitivity and specificity of MRI diagnoses; and (2) report interrater agreement for MRI classification of intradural spinal lesions. Cases were recruited from participating hospital databases over a 7-year period. Three reviewers independently evaluated each MRI study prior to and after provision of clinical information. A total of 87 cases were sampled (17 degenerative myelopathy, 53 neoplasia, nine inflammatory, and eight vascular). Magnetic resonance imaging had excellent (>97.6%) sensitivity for diagnosis of intradural spinal cord lesions but specificity varied before and after provision of clinical data (68.6% vs. 82.4%, P = 0.023). Magnetic resonance imaging had good sensitivity (86.8%) and moderate specificity (64.7-72.5%) for diagnosing neoplasia. Sensitivity was lower for classifying inflammatory lesions but improved with provision of clinical data (48.1% vs. 81.5%, P = 0.015). Magnetic resonance imaging was insensitive for diagnosing vascular lesions (25.0%). Interrater agreement was very good for correctly diagnosing dogs with intradural lesions (ĸ = 0.882-0.833), and good (ĸ = 0.726-0.671) for diagnosing dogs with neoplasia.


Subject(s)
Dog Diseases/diagnosis , Myelitis/veterinary , Spinal Cord Neoplasms/veterinary , Spinal Cord Vascular Diseases/veterinary , Animals , Case-Control Studies , Dog Diseases/diagnostic imaging , Dogs , Female , Magnetic Resonance Imaging , Male , Myelitis/diagnosis , Myelitis/diagnostic imaging , Retrospective Studies , Sensitivity and Specificity , Spinal Cord Neoplasms/diagnosis , Spinal Cord Neoplasms/diagnostic imaging , Spinal Cord Vascular Diseases/diagnosis , Spinal Cord Vascular Diseases/diagnostic imaging
5.
Vet Radiol Ultrasound ; 46(6): 467-71, 2005.
Article in English | MEDLINE | ID: mdl-16396261

ABSTRACT

A 2-year-old male (Hungarian Vizsla) was evaluated for progressive discomfort of possible spinal origin. A minimum data base, thoracolumbar magnetic resonance (MR) imaging examination and electrophysiologic investigation were all normal. Cerebellomedullary and lumbar cerebrospinal fluid (CSF) was collected. The fluid was unremarkable except for elevated total protein. Shortly, thereafter, the dog had progressive neurologic deterioration referable to a caudal lumbar spinal cord lesion. In a repeated MR examination there was a well-circumscribed intramedullary lesion at the site where lumbar CSF was collected. The signal characteristics of the lesion were compatible with subacute hemorrhage, which was confirmed to be hematomyelia at the time of successful decompressive surgery.


Subject(s)
Dog Diseases/diagnosis , Spinal Cord Injuries/veterinary , Spinal Cord Vascular Diseases/veterinary , Animals , Dogs , Male , Spinal Cord Injuries/complications , Spinal Cord Vascular Diseases/etiology
6.
J Vet Med Sci ; 67(12): 1265-8, 2005 Dec.
Article in English | MEDLINE | ID: mdl-16397388

ABSTRACT

We conducted combined electrophysiological examinations including F-wave, motor nerve conduction velocity (MNCV), spinal cord-evoked potential (SCEP), and needle electromyography (EMG) in two cats involved in traffic accidents that consequently developed hind limb paralysis caused by lumbar hematomyelia. F-wave could no longer be elicited within 3 days after the accident, and the MNCV and compound muscle action potential (CMAP) amplitude decreased in a time-dependent manner, with CMAP no longer being evoked after 7 or 8 days. EMG showed abnormalities such as fibrillation and positive sharp waves after 6 to 8 days. These results suggest that such combined electrophysiological examinations may provide objective, quantitative data for motor nerve dysfunction in cats with lumbar hematomyelia.


Subject(s)
Cat Diseases/diagnosis , Cat Diseases/pathology , Electrophysiology/methods , Lumbosacral Region/pathology , Motor Neurons/pathology , Spinal Cord Vascular Diseases/veterinary , Accidents, Traffic , Animals , Cats , Electromyography/veterinary , Evoked Potentials/physiology , Neural Conduction/physiology , Spinal Cord Vascular Diseases/diagnosis , Spinal Cord Vascular Diseases/pathology , Time Factors
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