Asymptomatic Large Arachnoid Cyst of the Middle Cranial Fossa

Gallassi, Roberto; Ciardulli, C.; Ferrara, Raffaele; Lorusso, Sebastiano; Galassi, Ercole; Lugaresi, E

doi:10.1159/000115775

Cited by 21 publications

(4 citation statements)

References 7 publications

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“…The pathogenesis of these cases has as a rule been ascribed to direct damage to the structures subserving memory by the tumor. Arachnoid cysts may give rise to a wide variety of neurological symptoms, and symptomless cases are rare [6]. Ours was a typical case of TGA, judging from the characteristics of the attack, the absence of head injury or loss of consciousness, the negative neurological examination and the transient nature of the memory deficit.…”

Section: Discussionmentioning

confidence: 83%

Transient global amnesia associated with a large arachnoid cyst of the middle cranial fossa of the non dominant hemisphere

1987

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Section: Discussionmentioning

confidence: 83%

Transient global amnesia associated with a large arachnoid cyst of the middle cranial fossa of the non dominant hemisphere

1987

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“…Most arachnoid cysts are located in the middle cranial fossa, particularly in the temporosylvian area (18). Localizations in the posterior fossa, the suprasellar cistern, the collicular region, the cerebellopontine angle and the cerebellar hemispheres are rare (7).…”

Section: Discussionmentioning

confidence: 99%

Cochlear Implantation in Extraordinary Cases

Çelenk¹,

Cevizci²,

Altınyay³

et al. 2015

Balkan Med J

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Although cochlear implantation has been almost a standard otological procedure worldwide, it may still create a dilemma for the surgeon in some unusual instances such as Seckel syndrome, the presence of a cardiac pacemaker for complete atrioventricular block, aural atresia, and in the presence of concurrent pathologies.Seckel syndrome is a rare constellation of malformations which is presumably inherited as an autosomal recessive trait. The primary characteristic features of Seckel syndrome are: intrauterine and postnatal dwarfism, severe microcephaly, orofacial dysmorphism with characteristic "Bird-headed" appearance, prominent beaked nose, micrognathia, variable mental retardation and the presence of other malformations, especially of the skeleton (1,2). Abnormalities associated with cardiovascular, hematopoietic, endocrine and central nervous systems were also reported in Seckel syndrome (3).Congenital aural atresia is a relatively common congenital anomaly in otology. It is estimated to occur in approximately 1 out of every 10,000 to 20,000 births. Hypoplasia of the external auditory canal, often associated with abnormalities of the auricle, middle ear and the inner ear structures, is the characteristic feature of aural atresia (4,5). It is unilateral in 70% to 85% of cases and the right ear is affected more frequently than the left (6). Intracranial arachnoid cysts are presumably congenital malformations that are believed to form by the splitting of the arachnoid membrane because of a circumscribed increased pulsation of the cerebrospinal fluid (7,8). Arachnoid cysts constitute approximately 1% of all intracranial lesions. The most common location of these lesions is the middle cranial fossa, with the posterior fossa being the second most common location. The clinical entities presented above are rare, and cochlear implantation in these entities is an extraordinary Background: Although cochlear implantation has been almost a standard otological procedure worldwide, it may still create a dilemma for the surgeon in some unusual instances such as Seckel syndrome, aural atresia and posterior fossa arachnoid cyst. Case Report: Three extraordinary cases of cochlear implantation were reported. The first case was a case of Seckel syndrome with a cardiac pacemaker due to complete atrioventricular block. The second case had posterior fossa arachnoid cyst that had retrosigmoid cyst removal and cochlear implantation simultaneously. The last case had cochlear implantation in the ear with congenital aural atresia. All cases could be implanted successfully with full electrode insertion and good audiological outcome. Delayed facial paralysis that occurred in the patient with arachnoid cyst resolved spontaneously. Conclusion: This study addressed the efficiency of cochlear implantation in cases of Seckel syndrome, complete atrioventricular block managed with cardiac pacemaker, congenital aural atresia and posterior fossa arachnoid cyst. In addition, the retrosigmoid approach and cochlear implantation can be performed simult...

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“…A few reports have suggested improved cognitive function after surgery of symptomatic arachnoid cysts. 5,7,8,10,12,14) Nevertheless, prophylactic surgical treatment for asymptomatic arachnoid cysts in pediatric patients has not been recommended. The WISC-R is valuable for detecting latent neuropsychological dysfunction and monitoring changes in performance.…”

Section: Discussionmentioning

confidence: 99%

Apparently Asymptomatic Arachnoid Cyst: Postoperative Improvement of Subtle Neuropsychological Impediment -Case Report-

Matsuda

Akutsu

Miyamoto

et al. 2010

Neurol. Med. Chir.(Tokyo)

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A 13-year-old right-handed boy sustained minor head trauma in a traffic accident. Computed tomography of the head showed no injuries, but revealed an arachnoid cyst in the left middle fossa. Single photon emission computed tomography revealed relatively decreased cerebral blood flow (CBF) in the left frontal and temporal lobes compared with the contralateral regions. The Wechsler Intelligence Scale for Children-Revised (WISC-R) test showed full scale intelligence quotient (IQ) was normal, but also a discrepancy between verbal IQ and performance IQ. Cyst-peritoneal shunting was performed. Postoperatively, laterality of the CBF in the frontal and temporal lobes was resolved and the verbal I-Q/performance IQ discrepancy was normalized. In this case, although the WISC-R score was apparently within normal limits, latent regional ischemia induced by compression due to the arachnoid cyst may have caused neuropsychological dysfunction. CBF study and neuropsychological evaluation by the WISC-R may be useful for selecting patients with apparently asymptomatic arachnoid cysts for surgery.

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Asymptomatic Large Arachnoid Cyst of the Middle Cranial Fossa

Cited by 21 publications

References 7 publications

Transient global amnesia associated with a large arachnoid cyst of the middle cranial fossa of the non dominant hemisphere

Transient global amnesia associated with a large arachnoid cyst of the middle cranial fossa of the non dominant hemisphere

Cochlear Implantation in Extraordinary Cases

Apparently Asymptomatic Arachnoid Cyst: Postoperative Improvement of Subtle Neuropsychological Impediment -Case Report-

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