Intracranial ectopic choroid plexus cyst in a dog

Nishida, Hidetaka; Yamazaki, M; Sakai, Hiroki; Maeda, Sadatoshi; Kamishina, Hiroaki

doi:10.1292/jvms.18-0244

Cited by 5 publications

(13 citation statements)

References 25 publications

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“…1,14 Variable contrast enhancement is described. In the two cases published in the veterinary literature with MRI descriptions, 14,22 one showed strong homogeneous contrast enhancement of the lesion and the second only weak contrast enhancement of the membranous tissue in the cystic lesion. Contrast enhancement may be related to vascularity of the cysts, but the cause of homogeneous enhancement is not fully understood.…”

Section: Discussionmentioning

confidence: 94%

“…22 Progressive enlargement has been infrequently reported in human studies. 22 The osmotic gradient between the intra-and extracystic medium, and fluid hypersecretion by the lining cells of the cyst wall, were suggested. 23 Finally, no description of feline ependymal cysts has been published previously and only two cases are reported in dogs, 25,26 including one cerebellar, in the fourth ventricle, 25 and one suprapituitary in the third ventricle for the more recent case.…”

Section: Discussionmentioning

confidence: 99%

“…In veterinary medicine, two feline quadrigeminal cysts have been successfully treated with cystoperitoneal shunt. 4,5 In dogs, surgical resection has been described for intracranial cystic lesions, 14,17,22,[25][26][27] but a cystoperitoneal shunt also appears to be an effective treatment method. 28 Among canine cases of intracranial cystic lesions, two cases of choroid plexus cysts have been surgically treated, with no recurrence documented after follow-ups of 3 and 18 months, follow-up.…”

Section: Discussionmentioning

confidence: 99%

“…28 Among canine cases of intracranial cystic lesions, two cases of choroid plexus cysts have been surgically treated, with no recurrence documented after follow-ups of 3 and 18 months, follow-up. 15,22 However, local recurrence of ependymal or neuroendodermal cysts were reported after incomplete surgical excision. 15,26 Therapeutic decisions must be based on cystic location or accessibility, but permanent procedures should be promoted.…”

Section: Discussionmentioning

confidence: 99%

“…The ongoing enlargement of the cyst may have resulted from active fluid secretion from choroid plexus tissue, as was suspected in a previous case. 22 Several theories have been formulated about their origin, and most authors suggest an embryogenetic origin, 21 even if some cases may have been secondary to head trauma or following intraventricular shunting. 14 In our cat, an embryogenetic origin is suspected as no head trauma or shunting occurred.…”

Section: Discussionmentioning

confidence: 99%

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Symptomatic lateral ventricular cystic lesion in a young cat

Debreuque

DUCERVEAU²,

Valin³

et al. 2020

Journal of Feline Medicine and Surgery Open Reports

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Case summary A 1.5-year-old male neutered Persian cat was referred for acute deterioration of chronic left head tilt and ataxia. A lateral intraventricular cystic lesion, closely associated with the left choroid plexus, was identified on MRI. The intralesional signal intensity and cytological analysis of the fluid revealed a liquid similar to cerebrospinal fluid. After trepanation, an endoscopic-assisted fenestration and aspiration of the cyst were performed to temporally relieve the high intracranial pressure while waiting for surgical cystoperitoneal shunt placement. Three weeks after surgery, clinical relapse and recurrence of the lesion were noted on the pre-cystoperitoneal shunting MRI. During anaesthesia, the cat arrested. Cardiac resuscitation was successfully performed and cystoperitoneal shunting was postponed. Global brain ischaemia was then suspected, based on major forebrain clinical signs and MRI abnormalities. During a 6-month recovery period, a further three fine-needle CT-guided aspirations of the lesion were required, owing to clinical recurrence and increased cyst size. Cystoperitoneal shunting was eventually performed, allowing persistent reduction of the lesion and long-term improvement of the cat’s neurological status. Relevance and novel information This is the first report of a symptomatic lateral intraventricular cystic lesion in a cat. A left lateral intraventricular choroid plexus cyst was suspected based on the MRI features. Our case suggests that endoscopic fenestration and CT-guided aspiration are not adequate treatments for long-term management. Cystoperitoneal shunting may be a safe procedure, allowing significant and stable reduction of the cystic lesion, associated with improvement in the cat’s neurological status by preventing high intracranial pressure.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Symptomatic lateral ventricular cystic lesion in a young cat

Debreuque

DUCERVEAU²,

Valin³

et al. 2020

Journal of Feline Medicine and Surgery Open Reports

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Clinical course and MRI lesion progression over 4 years in a dog with final diagnosis of high‐grade oligodendroglioma

Tomazi,

Stein,

Oevermann

et al. 2024

Vet Record Case Reports

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A 9‐month‐old Cavalier King Charles Spaniel with 3‐month history of paroxysmal episodes of cervical pain and scratching had a magnetic resonance imaging revealing a large intra‐axial cystic lesion in the left frontal lobe, caudal transtentorial and foraminal brain herniation, and cervical syringomyelia. Despite suspected high‐grade glioma, clinical signs improved under palliative treatment. Follow‐up magnetic resonance imaging 2.5 years later showed a similar lesion size, with no radiological evidence of increased intracranial pressure. The differential diagnosis was reconsidered to possibly porencephaly, congenital cystic malformation or parasitic cyst. The dog remained clinically stable for 19 months before developing acute generalised, single, self‐limiting seizures, deteriorating to cluster seizures, stupor, cardiovascular arrest and death. Postmortem magnetic resonance imaging revealed lesion progression with ventricle invasion. Neuropathology confirmed a high‐grade oligodendroglioma with subarachnoid and intraventricular drop metastasis. This is the first report describing long‐term clinical course and magnetic resonance imaging lesion progression under palliative treatment of a dog ultimately diagnosed with high‐grade oligodendroglioma.

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MRI features of a presumed noncolloidal intraventricular cyst in a young cat

Fantaconi

Masian²,

Anderson³

et al. 2021

Vet Record Case Reports

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A 5‐month‐old, male entire, Abyssinian cat was referred for investigation of 1‐week history of lethargy and suspected neck pain. Neurological examination revealed severe obtunded mentation, intermittent opisthotonic posture, ambulatory tetraparesis, positional vertical nystagmus and neck hyperesthesia. Haematology and biochemistry profile were within normal limits. MRI of the head revealed bilateral ventriculomegaly of the lateral ventricles. The left ventricle was more severely dilated and contained a large intraventricular cyst‐like structure bordered by a thin membrane. The cystic lesion caused a marked mass effect with mild‐line shift, cerebellar compression as well as caudal transtentorial and foramen magnum herniation. A congenital intraventricular cyst was suspected based on MRI findings.

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Intracranial ectopic choroid plexus cyst in a dog

Cited by 5 publications

References 25 publications

Symptomatic lateral ventricular cystic lesion in a young cat

Symptomatic lateral ventricular cystic lesion in a young cat

Clinical course and MRI lesion progression over 4 years in a dog with final diagnosis of high‐grade oligodendroglioma

MRI features of a presumed noncolloidal intraventricular cyst in a young cat

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