A case of late-onset aqueductal membranous occlusion and a successful treatment with neuro-endoscopic surgery

Matsuda, Mitsunobu; Shibuya, Satoshi; Oikawa, Takanori; Murakami, Kensuke; Mochizuki, Hidetaka

doi:10.5692/clinicalneurol.51.590

Cited by 7 publications

(23 citation statements)

References 8 publications

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“…MRI findings resembled those seen in other animals and humans with hydrocephalus caused by interference with CSF flow at the mesencephalic aqueduct [2,3,4, 6, 7, 10, 14,15,16,17, 19, 21, 24]. Generally, disturbance of CSF flow at the mesencephalic aqueduct such as in aqueductal stenosis is diagnosed by findings of considerable expansion of the lateral ventricles, third ventricle, while the fourth ventricles remain normal [2,3,4, 6, 7, 10, 14,15,16,17, 19]. Feline infectious peritonitis is a good example of acquired obstructive hydrocephalus in the mesencephalic aqueduct, which may cause local expansion of the lateral and third ventricles [4, 16].…”

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confidence: 65%

“…Hydrocephalus characterized by partial ventricular dilation as in this case may lead to a suspicion of obstructive hydrocephalus, not compensatory hydrocephalus [4]. MRI findings resembled those seen in other animals and humans with hydrocephalus caused by interference with CSF flow at the mesencephalic aqueduct [2,3,4, 6, 7, 10, 14,15,16,17, 19, 21, 24]. Generally, disturbance of CSF flow at the mesencephalic aqueduct such as in aqueductal stenosis is diagnosed by findings of considerable expansion of the lateral ventricles, third ventricle, while the fourth ventricles remain normal [2,3,4, 6, 7, 10, 14,15,16,17, 19].…”

mentioning

confidence: 86%

“…In humans and canines, congenital malformation of the cerebral aqueduct causes occlusion of CSF flow and leads to acquired hydrocephalus, i.e., aqueductal stenosis. In humans, congenital or acquired abnormalities of the mesencephalon have been reported as causing aqueductal stenosis [2, 3, 6, 7, 10, 14, 15, 17, 19, 21]. In particular, a membranous structure in the mesencephalic aqueduct, called “web”, sometimes causes aqueductal stenosis and neuro-endoscopic surgery [3, 6, 7, 14, 19].…”

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confidence: 99%

“…In humans, congenital or acquired abnormalities of the mesencephalon have been reported as causing aqueductal stenosis [2, 3, 6, 7, 10, 14, 15, 17, 19, 21]. In particular, a membranous structure in the mesencephalic aqueduct, called “web”, sometimes causes aqueductal stenosis and neuro-endoscopic surgery [3, 6, 7, 14, 19]. Aqueductal stenosis caused by hypoplasia of the mesencephalon has been reported in dogs and mice, but no reports in veterinary medicine have described aqueductal stenosis caused by web [4, 17, 24, 25].…”

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confidence: 99%

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Low-field magnetic resonance imaging and computed tomography of a calf with aqueductal stenosis caused by web: comparison with normal calves

Hori

Suzuki

Koiwa

et al. 2019

The Journal of Veterinary Medical Science

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A 6-day-old female Holstein displayed a dome-shaped skull and cardiac murmur on physical examination. Neurological abnormalities included progressive ataxia, decreased pupillary light reflex, and blindness soon after birth. On diagnostic imaging, CT identified expanded ventricles and thyroid hypoplasia on the left side. MRI detected expanded ventricles, especially in the rostral cerebrum at the mesencephalic aqueduct, compared with normal calves, so we suspected hydrocephalus causing stenosis of the mesencephalic aqueduct. Postmortem examination revealed a structure in the mesencephalic aqueduct resembling the “web” type of aqueductal stenosis described in humans. This case report indicates the utility of describing mesencephalic aqueductal stenosis by web and detection of other malformations on CT and MRI for antemortem diagnosis in calves.

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confidence: 65%

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confidence: 86%

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confidence: 99%

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confidence: 99%

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Low-field magnetic resonance imaging and computed tomography of a calf with aqueductal stenosis caused by web: comparison with normal calves

Hori

Suzuki

Koiwa

et al. 2019

The Journal of Veterinary Medical Science

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“…[ 45 ] The aqueductal stenosis in LOVA is thought to arise congenitally, leading to the associated feature of macrocephaly and expanded or obliterated sella turcica. [ 34 38 45 ] It remains uncertain why the hydrocephalic entity manifests in late adulthood. Patients with LOVA can decompensate at any time in their adult life with acute symptoms, which are generally well controlled with endoscopic third ventriculostomy (ETV).…”

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confidence: 99%

Endoscopic third ventriculostomy in normal pressure hydrocephalus and symptomatic long-standing overt ventriculomegaly

Balevi

2017

Asian J Neurosurg

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Objectives:The aim of this study is to define the role and effectiveness for an endoscopic third ventriculostomy (ETV) in patients with seconder normal pressure hydrocephalus(SNPH), idiopathic normal pressure hydrocephalus (INPH) and symptomatic longstanding overt ventriculomegaly (SLOVA).Materials and Methods:3 patients with SLOVA, 3 patients with INPH and 3 patients with SNPH underwent ETV were studied retrospectively. The patients had a follow-up of 1-6 years. Preoperative CT or/and MRI of the brain was done in all cases. Tap test was done in all cases. Clinical examination finding were classified according to the by Japanese Committee for Scientific Research (JCSS) on intractable Hydrocephalus. Patients were studied to evaluate of the patency of ventriculosthomy and aqueduclus slyvius by a Cine PC MR and CSF_DRİVE T2 Sequence MRI after 1-6 years.Results:Headache, gait disturbance and pollakiuria improved in three patients with SNPH underwent ETV, but dementia didn’t improve in one patient. Pollakiuria and headache improved in three patients with INPH underwent ETV but preoperative gait disturbance grade three remained unchanged in one patient. Headache improved in three patients with SLOVA underwent ETV. Preoperative gait disturbance grade 3 remained unchanged in one patient, but improved pollakiuria. We confirmed the patency of a third ventriculostomy and decreasing degrees of CSF flow into the aquaductus sylvius.Conclusions:In properly selected patients with SNPH, SLOVA and INPH who had headache, slight gait disturbance and pollakiuria, mainly those with a short duration of symptoms, ETV may provide good results.

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Hydrocephalus Resulting from Late-Onset Aqueductal Membranous Occlusion: A Case Report and Review of the Literature

et al. 2020

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A case of late-onset aqueductal membranous occlusion and a successful treatment with neuro-endoscopic surgery

Cited by 7 publications

References 8 publications

Low-field magnetic resonance imaging and computed tomography of a calf with aqueductal stenosis caused by web: comparison with normal calves

Low-field magnetic resonance imaging and computed tomography of a calf with aqueductal stenosis caused by web: comparison with normal calves

Endoscopic third ventriculostomy in normal pressure hydrocephalus and symptomatic long-standing overt ventriculomegaly

Hydrocephalus Resulting from Late-Onset Aqueductal Membranous Occlusion: A Case Report and Review of the Literature

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