Imaging Diagnosis ‐ Spontaneous Subperiosteal Vertebral Hemorrhage in a Greyhound

Theobald, Anita; Dennis, Ruth; Beltrán, Elsa

doi:10.1111/vru.12076

Cited by 2 publications

(3 citation statements)

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“…Subperiosteal lumbar vertebral hematomas have been described antemortem in a dog on magnetic resonance imaging (MRI) 1 and on postmortem myelography in dogs. 20 In the former MRI case, there was T2w hyperintense, T1w isointense (to grey matter) non-contrast enhancing extradural material within the vertebral canal causing moderate spinal cord compression.…”

Section: Discussionmentioning

confidence: 99%

“…In this case, the lesion appeared as a radiolucent area beneath a mineralized rim along the dorsal aspect of the frontal bones on radiographs, similar to the radiographs in dog 1 and 2, however no advanced imaging was performed. Subperiosteal lumbar vertebral hematomas have been described antemortem in a dog on magnetic resonance imaging (MRI) 1 and on post‐mortem myelography in dogs 20 . In the former MRI case, there was T2w hyperintense, T1w isointense (to grey matter) non‐contrast enhancing extradural material within the vertebral canal causing moderate spinal cord compression.…”

Section: Discussionmentioning

confidence: 99%

“…Cephalohematomas, also known as calvarial subperiosteal hematomas, are collections of extravasated blood between the periosteum and bone causing elevation of the periosteum 1 . Because the hematoma develops beneath the periosteum, the margins are limited by suture lines due to the attachment of the periosteum to the bone's edge 2,3 .…”

Section: Introductionmentioning

confidence: 99%

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Canine calvarial subperiosteal hematomas are fluid to soft tissue attenuating mass‐like lesions with smoothly marginated peripheral mineralization on CT

Nowak

King

Ansón

2020

Vet Radiology Ultrasound

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Subperiosteal hematomas are accumulations of blood between a bone and the periosteum leading to elevation of the periosteum. When ossified they have a mineralized outer rim. For this retrospective, multi-institutional case series, medical records were searched to identify dogs that underwent CT for focal calvarial swellings noted acutely after trauma. A total of four dogs were included. Computed tomography images were reviewed for each case. The focal swellings had progressed in size during the weeks after the head trauma until the time of imaging. Findings in all cases included a fluid to soft tissue attenuating mass-like lesion with smoothly marginated peripheral mineralization. Diagnosis was confirmed in two cases by cytology and/or histopathology. Therefore, authors recommend that subperiosteal hematoma be included in the differential diagnosis list for dogs with these clinical and CT characteristics. Based on our review of the literature, this is the first report to describe the CT features of calvarial subperiosteal hematomas in dogs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Canine calvarial subperiosteal hematomas are fluid to soft tissue attenuating mass‐like lesions with smoothly marginated peripheral mineralization on CT

Nowak

King

Ansón

2020

Vet Radiology Ultrasound

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Anatomic description and clinical relevance of the meningovertebral ligament in dogs

Kent

Glass

Song

et al. 2019

javma

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OBJECTIVE To determine whether dogs have a meningovertebral ligament (MVL) and to assess the effect that structure may have on pathological lesions within the ventral epidural space. SAMPLE Cadaveric specimens from 6 neurologically normal dogs and 2 dogs with vertebral neoplasms that extended into the epidural space and MRI sequences and cytologic preparations from 2 dogs with compressive hydrated nucleus pulposus extrusion that underwent decompressive surgery. PROCEDURES The vertebral column was removed for gross and histologic examination from the cadavers of neurologically normal dogs and dogs with vertebral neoplasms. For dogs with hydrated nucleus pulposus extrusion, MRI sequences to assess lesion location and topography and cytologic preparations of material surgically extirpated from the ventral epidural space were reviewed. RESULTS All dogs had an MVL, which formed the ventral boundary of the epidural space and consisted of fibrous bands that attached the external ventral surface of the dura mater of the spinal cord to the dorsal surface of the vertebral bodies throughout the length of the vertebral canal. Both vertebral neoplasms had a bilobed appearance as did the extruded nucleus pulposus lesions on MRI sequences. CONCLUSIONS AND CLINICAL RELEVANCE Results of the present study indicated that dogs have an MVL, which creates an anatomic barrier within the ventral epidural space and causes pathological lesions to adopt a bilobed shape regardless of the pathogenic process. Further anatomic studies of the MVL and vertebral canal of dogs are necessary to elucidate how those structures affect lesion progression within the ventral epidural space.

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Imaging Diagnosis ‐ Spontaneous Subperiosteal Vertebral Hemorrhage in a Greyhound

Cited by 2 publications

References 15 publications

Canine calvarial subperiosteal hematomas are fluid to soft tissue attenuating mass‐like lesions with smoothly marginated peripheral mineralization on CT

Canine calvarial subperiosteal hematomas are fluid to soft tissue attenuating mass‐like lesions with smoothly marginated peripheral mineralization on CT

Anatomic description and clinical relevance of the meningovertebral ligament in dogs

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