Arachnoid cyst of the middle crania fossa, disclosed by bleeding.

Recondo, A. De; Merran, S.

doi:10.1136/jnnp.61.5.444

Cited by 6 publications

(3 citation statements)

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“…5,11,12 Sudden deterioration can result if a cyst ruptures or bleeds into its cavity. 11,13 The most symptomatogenic (up to 60%) are suprasellar cysts. 14 Various theories have been proposed to explain the formation of these cysts: trapping of fluid by a ball-valve mechanism, secretion of fluid by ependymal cells, and fluid ingress due to an osmotic gradient.…”

Section: Discussionmentioning

confidence: 99%

Unusual Volume Reduction of Galassi Grade III Arachnoid Cyst Following Head Trauma

Prokopienko

Kunert

Marchel

2013

J Neurol Surg A Cent Eur Neurosurg

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Section: Discussionmentioning

confidence: 99%

Unusual Volume Reduction of Galassi Grade III Arachnoid Cyst Following Head Trauma

Prokopienko

Kunert

Marchel

2013

J Neurol Surg A Cent Eur Neurosurg

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“…This may lead to the formation of a subdural hygroma with subsequent absorption of the cyst fluid, as it would through continuous drainage by a cyst-peritoneal shunt. When communication between cyst and subdural space persists, the cyst may gradually decrease in size and even disappear [6][7][8][9][10][11] . However, separation of the cyst from the subdural space can recur 7,8,11 .…”

Section: Discussionmentioning

confidence: 99%

“…Several authors have described arachnoid cysts rupturing into subdural hematomas spontaneously, or after (mild) head injury in children and adults [6][7][8][9][10][11] . Subsequent disappearance of the cysts occurred between 5 months and 10 years later.…”

Section: Introductionmentioning

confidence: 99%

Resolution of presumed arachnoid cyst in utero

Elbers

Furness

1999

Ultrasound in Obstet & Gyne

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Ruptured Sylvian arachnoid cysts: an update on a real problem

et al. 2022

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Purpose Sylvian arachnoid cysts (SACs) are the most common type of arachnoid cysts and the most prone to undergo a rupture. This event is considered rare but potentially severe. No definite information is available on its occurrence or management. The goal of the present article is to provide an update on the epidemiological, etiological, and clinical aspects and the management of this peculiar clinical condition. Methods A comprehensive review of the English literature of the last 40 years on this topic has been realized. Moreover, a personal series of children investigated and treated in the last 20 years is presented. These patients were managed as follows: (1) treatment of the subdural collection; (2) identification of candidates for surgical treatment of the residual cyst (brain MRI, perfusion brain MRI, prolonged invasive ICP monitoring (selected cases), EEG, neuropsychological tests); (3) surgical treatment of the cyst in the patients with pathological perfusion MRI and/or ICP measurement and/or clear neurophysiological and neuropsychological correlations. Results A total of 446 patients (430 from the literature and 16 from the personal series), mainly children, adolescents, and young adults, have been analyzed leading to the following results: (1) SAC rupture is rare but not negligible (yearly risk of rupture: 0.04%; overall risk up to 10% in children affected by SCAs). Prophylactic surgery in asymptomatic cases is not advisable. (2) The mechanism of rupture is not known but an impact of SAC against the sphenoid wing and/or a direct injury on SAC through a thinned temporal bone, with possible laceration of the cyst wall vessels and/or tear of the bridging veins, can be hypothesized. A head injury is often not reported (may be misdiagnosed). (3) Subdural collection (hygroma > chronic hematoma) is the most common finding followed by intracystic bleeding, extradural hematoma, and other types of bleeding. Signs or symptoms of raised intracranial pressure are the most frequent ones. (4) The complication of the rupture is usually treated in emergency or in the acute period by burr hole or craniotomic evacuation of the subdural collection, although a conservative management is possible in some cases. Following the rupture, the majority of SACs are treated (70%), often at the same time of the complication, but no specific investigations are routinely performed to select candidates. According to our protocol, only 43.7% of SACs needed to be treated. Conclusions The “spontaneous” or posttraumatic rupture of SACs is a rare but potentially significant complication followed by a generally good outcome. The course of the cyst is independent from the outcome of the complication, consequently requiring specific investigations for individuating those lesions interfering with CSF dynamics and/or cerebral blood flow.

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Arachnoid cyst of the middle crania fossa, disclosed by bleeding.

Cited by 6 publications

References 0 publications

Unusual Volume Reduction of Galassi Grade III Arachnoid Cyst Following Head Trauma

Unusual Volume Reduction of Galassi Grade III Arachnoid Cyst Following Head Trauma

Resolution of presumed arachnoid cyst in utero

Ruptured Sylvian arachnoid cysts: an update on a real problem

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