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Case Reports
.2023 Feb 1;18(4):1461-1465.
doi: 10.1016/j.radcr.2022.10.097. eCollection 2023 Apr.

Autoincudotomy as an uncommon etiology of conductive hearing loss: Case report and review of literature

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Case Reports

Autoincudotomy as an uncommon etiology of conductive hearing loss: Case report and review of literature

Fathi Hilal et al. Radiol Case Rep..

Abstract

Ossicular pathology is a recognized etiology of conductive hearing loss. Ossicular pathology includes 2 main categories, that is, ossicular chain fixation and ossicular discontinuity. Ossicular discontinuity can be congenital or acquired. Auto-incudotomy is an uncommon form of acquired ossicular discontinuity that usually occurs as a sequel of spontaneous expulsion of cholesteatoma. Typically, it manifests with conductive hearing loss without evidence of cholesteatoma. In this report, we presented CT imaging finding of a 34-year-old male with tympanic membrane perforation and defective long process of the incus (auto-incudotomy) with minimal middle ear granulation tissue and adhesions, sequela of cholesteatoma. Radiologists should pay attention for evaluation of ossicles especially in patients presented with conductive hearing loss.

Keywords: Autoincudotomy; CT temporal bone; Cholesteatoma.

© 2022 The Authors. Published by Elsevier Inc. on behalf of University of Washington.

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Figures

Fig 1
Fig. 1
Autoincudotomy in a 34-year-old male presented with conductive hearing loss and otorrhea. High-resolution CT temporal bone with Poschl views (a) right and (b) left reveal loss of mineralization with defective long process of the incus (arrow) on the right side, compared to the left. Minimal hypodense granulation tissue and adhesions were observed.
Fig 2
Fig. 2
Autoincudotomy in a 34-year-old male presented with conductive hearing loss and otorrhea. High-resolution CT temporal bone with axial views (a) right and (b) left reveal loss of characteristic 2 osseous dots within the middle ear space, corresponding to demineralization and osseous defect of the long process of the incus on the right side, compared to the left (arrows).
Fig 3
Fig. 3
(a) Pre-operative and (b) post-operative audiograms demonstrating pure tone averages of the right ear and partial closure of the air bone gap with surgery.
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References

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