External Auditory Canal Stenosis and Partial Atresia without Associated Anomalies

Unilateral or bilateral ear canal stenosis or atresia occurring without microtia or associated anomalies may go undetected during early childhood. Summaries of ten cases illustrate difficulties in making early diagnoses. An unusual case of inherited isolated bilateral external canal atresia occurring in a mother and daughter is included. Potential pitfalls in diagnosis and management are discussed.

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IMAGING DIAGNOSIS—EAR CANAL DISTENSION FOLLOWING EXTERNAL AUDITORY CANAL ATRESIA

Veterinary Radiology & Ultrasound ◽

10.1111/j.1740-8261.2008.00363.x ◽

2008 ◽

Vol 49 (3) ◽

pp. 267-269 ◽

Cited By ~ 5

Author(s):

ABBY R. CAINE ◽

MIKE E. HERRTAGE ◽

JANE F. LADLOW

Keyword(s):

External Auditory Canal ◽

Imaging Diagnosis ◽

Ear Canal ◽

Canal Atresia

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The first Malaysian experience on totally endoscopic ear surgery

Proceedings of Singapore Healthcare ◽

10.1177/2010105819884333 ◽

2019 ◽

Vol 29 (1) ◽

pp. 5-9

Author(s):

Khairunnisak Misron ◽

Tengku Mohamed Izam Tengku Kamalden

Keyword(s):

Middle Ear ◽

External Auditory Canal ◽

Intraoperative Complications ◽

Endoscopic Ear Surgery ◽

Ear Canal ◽

Ear Surgery ◽

Internal Acoustic Meatus ◽

Canal Stenosis ◽

Delayed Complications ◽

Conductive Hearing

Introduction: Totally endoscopic ear surgery (TEES) is defined as exclusive application of endoscope transcanally in otologic surgery. This study is aimed to highlight indications and ear pathologies for TEES. In addition, intraoperative, early postoperative and delayed postoperative complications of TEES will be also described in this study. Methodology: This is a retrospective study of TEES performed by a single experienced and trained otologist in endoscopic ear surgery in a single institution between 1 July 2014 and 31 June 2018. A total of 43 patients were recruited in this study. Sociodemographic information, indications for TEES, ear pathologies, type of surgery performed and complications of TEES were analyzed. Results: The indications for TEES comprised middle ear lesion (65.1%), followed by second look surgery (14.0%), external auditory canal lesion (11.6%) and internal acoustic meatus lesion and surgery for conductive hearing loss which were 4.7%. Various external auditory canal pathologies encountered for TEES were ear canal osteoma (4.7%), acquired ear canal stenosis (2.3%) and tumor (4.7%). Regarding middle ear pathologies, limited atticoantral cholesteatoma accounted for most of the cases, 46.5%. Other middle ear lesions included adhesive otitis media (14.0%), recurrent cholesteatoma (14.0%), tumor (4.7%), otosclerosis (2.3%) and ossicular discontinuity (2.3%). Internal acoustic meatus lesion constituted 4.7% of cases. Some 4.7% of cases developed intraoperative complications, while early and delayed complications were 7.0%. Conclusion: TEES is a feasible surgical technique for diverse ear pathologies in the otologic specialty. It is also proven to be safe with good surgical outcomes.

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Transplantation of autologous oral mucosal epithelial cell sheets inhibits the development of acquired external auditory canal atresia in a rabbit model

Acta Biomaterialia ◽

10.1016/j.actbio.2020.04.031 ◽

2020 ◽

Vol 110 ◽

pp. 141-152

Author(s):

Taro Inagaki ◽

Tsunetaro Morino ◽

Ryo Takagi ◽

Masayuki Yamato ◽

Izumi Koizuka ◽

...

Keyword(s):

Epithelial Cell ◽

External Auditory Canal ◽

Rabbit Model ◽

Cell Sheets ◽

Mucosal Epithelial Cell ◽

Canal Atresia

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Prevalence of external auditory canal exostoses in Australian surfboard riders

The Journal of Laryngology & Otology ◽

10.1258/002221504323086525 ◽

2004 ◽

Vol 118 (5) ◽

pp. 348-351 ◽

Cited By ~ 35

Author(s):

William Hurst ◽

Michael Bailey ◽

Benjamin Hurst

Keyword(s):

External Auditory Canal ◽

Cold Water ◽

Control Group ◽

External Ear ◽

Ear Canal ◽

External Ear Canal ◽

Rate Of Growth

This paper assessed 300 surfboard riders, comprising 229 males and 71 females to determine the prevalence and rate of growth of exostoses in this population. A group of cold water swimmers and a control group were also examined. Significant obstruction, defined as two thirds or more occlusion of the ear canal was noted in 90 of the male surfers and 10 female surfers. This degree of occlusion was found in seven of the 32 cold water swimmers. A male surfer who has surfed regularly for 20 years or more has a one in two chance of developing significant obstruction of the external ear canal resulting from exostoses and this is a three in seven chance for females.

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Histopathology of the soft parts in 50 patients with malignant external otitis

The Journal of Laryngology & Otology ◽

10.1017/s0022215100108977 ◽

1989 ◽

Vol 103 (4) ◽

pp. 366-368 ◽

Cited By ~ 21

Author(s):

J. Bernheim ◽

J. Sade

Keyword(s):

Skin Lesions ◽

External Otitis ◽

Pathological Feature ◽

External Ear ◽

Ear Canal ◽

Malignant External Otitis ◽

External Ear Canal ◽

External Canal ◽

Skin Biopsies ◽

Skin Coverage

AbstractReports concerning the lesions of the skin coverage of the external ear canal in malignant external otitis (M.E.O.) are very few. To evaluate this problem, we studied the skin lesions of 45 skin biopsies from 40 M.E.O. patients, 23 from regions covering the osseous part of the ear structure, seven from the cartilaginous part of the external canal and 15 from both parts. The epidermis was normal in nine, thickened in 16, with acanthotic thickening and pseudoepitheliomatous hyperplasia in 20. In the dermis the amount of collagen was normal, but it was infiltrated by the inflammatory process. Acute inflammation was observed in 16 biopsies, subacute in 23, chronic in six. A mixture of acute and chronic changes was present in 18 biopsies. No major abnormalities of the vasculature could be detected. The distinguishing pathological feature of M.E.O. concerns the typical topographic distribution of the inflammation in the osseous part of the external ear canal.

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