Cervicothoracic syringohydromyelia associated with a prosencephalic mass in a dog

Szabo, David T.; Saveraid, Travis C.; Ródenas, Sergio

doi:10.1111/j.1748-5827.2012.01266.x

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…CM is one of the most common causes of SM in the dog which is characterized by the development of cavities in the spinal cord containing a fluid similar to CSF ( 13 , 14 ) however SM can develop after any obstruction to CSF channels and has been reported in a variety of disorders ranging from acquired cerebellar herniation secondary to intracranial masses ( 15 – 18 ) to spinal arachnoid diverticulum ( 19 , 20 ) and spinal cord tethering ( 21 ). The terminology of SM is equally confused, with some veterinary papers referring to syringohydromyelia or hydrosyringomyelia.…”

Section: Introductionmentioning

confidence: 99%

Clinical Application of Diagnostic Imaging of Chiari-Like Malformation and Syringomyelia

2018

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Chiari-like malformation (CM) and syringomyelia (SM) is a frequent diagnosis in predisposed brachycephalic toy breeds since increased availability of MRI. However, the relevance of that MRI diagnosis has been questioned as CM, defined as identification of a cerebellar herniation, is ubiquitous in some breeds and SM can be asymptomatic. This article reviews the current knowledge of neuroanatomical changes in symptomatic CM and SM and diagnostic imaging modalities used for the clinical diagnosis of CM-pain or myelopathy related to SM. Although often compared to Chiari type I malformation in humans, canine CM-pain and SM is more comparable to complex craniosynostosis syndromes (i.e., premature fusion of multiple skull sutures) characterized by a short skull (cranial) base, rostrotentorial crowding with rostral forebrain flattening, small, and ventrally orientated olfactory bulbs, displacement of the neural tissue to give increased height of the cranium and further reduction of the functional caudotentorial space with hindbrain herniation. MRI may further reveal changes suggesting raised intracranial pressure such as loss of sulci definition in conjunction with ventriculomegaly. In addition to these brachycephalic changes, dogs with SM are more likely to have craniocervical junction abnormalities including rostral displacement of the axis and atlas with increased odontoid angulation causing craniospinal junction deformation and medulla oblongata elevation. Symptomatic SM is diagnosed on the basis of signs of myelopathy and presence of a large syrinx that is consistent with the neuro-localization. The imaging protocol should establish the longitudinal and transverse extent of the spinal cord involvement by the syrinx. Phantom scratching and cervicotorticollis are associated with large mid-cervical syringes that extend to the superficial dorsal horn. If the cause of CSF channel disruption and syringomyelia is not revealed by anatomical MRI then other imaging modalities may be appropriate with radiography or CT for any associated vertebral abnormalities.

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Section: Introductionmentioning

confidence: 99%

Clinical Application of Diagnostic Imaging of Chiari-Like Malformation and Syringomyelia

2018

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“…The formation of syringomyelia has been described in dogs and cats with brain masses and disturbance of cerebrospinal fluid flow. 18,19 In dogs, syringomyelia has commonly been associated with herniation of the foramen magnum, whereas in cats it is associated with either herniation of the foramen magnum or caudal transtentorial herniation, as in this case. 20 Cats with primary brain tumours are commonly presented with non-specific clinical signs (lethargy, inappetence and anorexia; signs not obviously referred to neurological dysfunction), occurring in 20% of cases in one large study population.…”

Section: Discussionmentioning

confidence: 84%

Feline meningioma with extensive nasal involvement

Pérez-Accino

Suñol

Munro

et al. 2019

Journal of Feline Medicine and Surgery Open Reports

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Case summary A 9-year-old male neutered domestic longhair cat was presented with a 3 week history of lethargy and pain of unknown origin. A large extra-axial mass was demonstrated on MRI of the head, with cribriform plate destruction, extensive nasal invasion and intracranial expansion, producing a severe mass effect. The mass was isointense on T1-weighted imaging, predominantly hypointense with some hyperintense areas on T2-weighted imaging and fluid attenuation inversion recovery, markedly contrast enhancing, and caused transtentorial and cerebellar herniation. Histopathological evaluation confirmed a transitional (mixed) meningioma. Relevance and novel information To our knowledge this is the first report of a meningioma with extensive nasal involvement in a cat. Based on this case, meningioma should be considered as a differential diagnosis for tumours involving the nasal cavity and frontal lobe with cribriform plate destruction.

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Cervicothoracic syringohydromyelia associated with a prosencephalic mass in a dog

Cited by 2 publications

References 30 publications

Clinical Application of Diagnostic Imaging of Chiari-Like Malformation and Syringomyelia

Clinical Application of Diagnostic Imaging of Chiari-Like Malformation and Syringomyelia

Feline meningioma with extensive nasal involvement

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