A Rare Stapes Abnormality

Kanona, Hala; Virk, Jagdeep Singh; Kumar, Gaurav; Chawda, Sanjiv; Khalil, S. Abi

doi:10.1155/2015/387642

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…Whittemore [11] also reported a case of a 12-year-old boy with the stapes crura attached to the promontory and the stapes head connected to the stapedial tendon, while the stapes footplate was located in the oval window and was mobile. Kanona [12] reported an unusual case of progressive conductive hearing loss with a lack of connection between the stapes superstructure and the footplate, which was fixed with an absent stapedius tendon. The location of the stapes superstructure is missing in the report.…”

Section: Discussionmentioning

confidence: 99%

Two cases of congenital stapes malformation: Implications for development of the stapes footplate and the oval window

Ishida

Okano

Hayashi

et al. 2020

Acta Oto-Laryngologica Case Reports

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The origin of the stapes footplate has been controversial for decades, especially regarding involvement of the otic capsule in the development of the footplate. We report two cases of stapes malformation in which the stapes footplate was absent, while the oval window was formed but was covered with mucosal membrane. Both the patients visited our department for long-standing hearing loss, which was due to congenital ossicular anomalies of rare variation, as suggested by intraoperative findings. Through two operated cases, we have also discussed the origin and the mechanisms in the development of the stapes and the oval window. The findings suggest that the formation of the oval window is independent from the development of the stapes footplate. Further reports and accumulation of cases with ossicular malformation are required to develop an appropriate classification of congenital ossicular anomalies based on both developmental mechanisms and analyses of the surgical outcomes.

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Section: Discussionmentioning

confidence: 99%

Two cases of congenital stapes malformation: Implications for development of the stapes footplate and the oval window

Ishida

Okano

Hayashi

et al. 2020

Acta Oto-Laryngologica Case Reports

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“…These findings may suggest a dual origin of the stapes, as supported by Cauldwell and Anson theory, of a dual origin to the stapes' footplate. Whittmore, in 2013, and later Kanona, in 2015, described similar cases of stapes' superstructure misplaced inferiorly and with a mobile footplate in the absence of trauma [ 13 , 14 ]. Nevertheless, we cannot reject the hypothesis of these findings to be related to a unique anlage which, somehow, suffered a misdevelopment.…”

Section: Discussionmentioning

confidence: 99%

Abnormal Congenital Location of Stapes’ Superstructure: Clinical and Embryological Implications

Henriques

Teles

Sousa

et al. 2016

Case Reports in Otolaryngology

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Congenital middle ear malformations are rare. Most part of them are usually associated with other malformations, such as aural atresia, microtia, and dysmorphic craniofacial features. A clinical case of a 24-year-old male with a right-sided conductive hearing loss since his childhood, without craniofacial malformation, is presented. He was proposed for exploratory tympanotomy under the suspicious diagnosis of otosclerosis. The surgery revealed an abnormal location of stapes' superstructure, which was attached to the promontory and had an isolated and mobile osseous footplate in the oval window. A stapes prosthesis was inserted and resulted in closure of the air-bone gap by 25 dB. A review of the literature was also performed using MEDLINE. Two theories diverge on the embryologic origin of the stapes. Our findings seem to be in favour of the theory that defines two different embryologic origins to the stapes.

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Congenital cholesteatoma together with ossicular chain anomaly

Kansu

Özlüoğlu

2016

Eur Arch Otorhinolaryngol

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Cholesteatomas that occur under an intact tympanic membrane in the absence of prior surgical procedures or perforation are defined as congenital cholesteatomas. These entities are rarely seen, because they do not cause any major symptoms unless they touch the ossicular chain. Likewise, isolated congenital ossicular anomalies that occur independently of external ear anomalies and craniofacial dysplasia are also rarely seen. Here, we report a patient who presented with congenital cholesteatoma associated with anomalies of the ossicular chain and discuss its pathogenesis.

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A Rare Stapes Abnormality

Cited by 4 publications

References 17 publications

Two cases of congenital stapes malformation: Implications for development of the stapes footplate and the oval window

Two cases of congenital stapes malformation: Implications for development of the stapes footplate and the oval window

Abnormal Congenital Location of Stapes’ Superstructure: Clinical and Embryological Implications

Congenital cholesteatoma together with ossicular chain anomaly

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