Congenital Anomaly of the Facial Nerve

Dickinson, John T.; Srisomboon, Prasit; Kamerer, Donald B.

doi:10.1001/archotol.1968.00770010359005

Cited by 26 publications

(4 citation statements)

References 7 publications

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“…Variations of the other cranial nerves are considered to be very rare. However, more and more variations are being recognized by microsurgery (18,(26)(27)(28)(29)(30). The incidence of intracranial neural connections between the glossopharyngeal and vagus nerve was 2.5 % (30).…”

Section: Discussionmentioning

confidence: 99%

Intracranial intradural variations of nerve roots

Kuruc¹,

Haviarová²,

Halgaš³

et al. 2021

BLL

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BACKGROUND: The aim of this paper was to point out the intradural cranial nerve roots variations in their localization and number to establish the incidence and clinical importance of the cranial nerve root variations. METHODS: The anatomical study was performed on 120 sides in 60 cadavers. There were 51 male cadavers with the mean age 43.3 and 9 female cadavers with the mean age of 39.5 years. RESULTS: Abducens nerve variations were observed in 48 cases (80 %). They were more frequently on the left side, in 25 cases (41.66 %). Duplicated abducens nerve was observed in 25 cases (41.66 %). Double and triple abducens nerve variations were also observed. CONCLUSIONS: Cranial nerve variations are rare, but variations of abducens nerve and atypical exit of the hypoglossal nerve from the fossa cranium posterior is not a rare variation. Knowledge of this variation may be important to various fi elds of medicine (Tab.

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Section: Discussionmentioning

confidence: 99%

Intracranial intradural variations of nerve roots

Kuruc¹,

Haviarová²,

Halgaš³

et al. 2021

BLL

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“…In the case with persistent stapedial artery described by Fowler (1961), the facial nerve was in its normal position but the chorda tympani took a downward course. Dickinson et al (1968) reported on a case in which the facial nerve coursed across the promontory but no persistent stapedial artery was present.…”

Section: Embryologymentioning

confidence: 99%

The Facial Nerve Coursing across the Promontory with a Persistent Stapedial Artery

Hoogland¹,

Marres²

1977

ORL

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“…Before the early 1960s, it was believed that anomalies of the facial nerve do not occur until Fowler firstly reported a series of “hump anomaly” with facial nerve hump posterior and lateral to the prominence of the external semicircular canal (Fowler, 1961). The congenital malformation of facial nerve was gradually recognized, but still mainly in cases with microtia (Dickinson et al, 1968) or Treacher Collin's syndrome (Sando et al, 1968). For decades, accumulating data of aberrant facial nerve in congenital malformation of middle ear with no co-existing malformation of the outer ear were reported in a form of case report (Kieff et al, 1998; Inagaki et al, 2014) until very recently when Jahrsdoefer studied 54 patients with congenital middle ear malformations.…”

Section: Introductionmentioning

confidence: 99%

Classification of facial nerve aberration in congenital malformation of middle ear: Implications for surgery of hearing restoration

Hao

et al. 2018

Journal of Otology

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ObjectivesFacial nerve aberration is the most troublesome situation in congenital malformations of middle ear. The aim of our study is to investigate its imaging and clinical features as well as relevant choice of surgical techniques for hearing improvement.MethodsA retrospective study involving review of clinical data of 227 patients (256 ears) with congenital middle ear anomaly was undertaken, including preoperative computed tomography (CT) data, surgical records and videos.ResultsAberration involving intratemporal facial nerve was found in 82/256 ears (32.03%) with congenital middle ear anomaly. The most common forms of aberration included overhanging over the oval window (50/82 ears, 60.98%), bifurcation (3/82 ears, 3.66%) and transverse over the promontory (3/82 ears, 3.66%), counting for 68.29% (56/82) of the cases with facial nerve aberration. Concomitant stapes malformation was found in 76/82 ears (92.68%) and atresia or stenosis of the oval window in 27/82 ears (32.93%). In 9/82 ears (10.98%) both stapes and oval window was absent. Elective surgeries for the purpose of hearing improvement included stapodotomy + piston implantation, labyrinthotomy, labyrinthotomy + total ossicular replacement prosthesis (TORP) implantation and Vibrant Soundbridge (VSB) implantation.ConclusionThe majority of facial nerve aberration in congenital malformation of middle ear involves displacement of facial nerve, in addition to concomitant malformations of the stapes and/or oval window, which may influence the choice of surgery for hearing improvement. VSB implantation may be considered as a useful option.

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Congenital Anomaly of the Facial Nerve

Cited by 26 publications

References 7 publications

Intracranial intradural variations of nerve roots

Intracranial intradural variations of nerve roots

The Facial Nerve Coursing across the Promontory with a Persistent Stapedial Artery

Classification of facial nerve aberration in congenital malformation of middle ear: Implications for surgery of hearing restoration

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