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Anatomy of the Ear

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...

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Bilateral External Ear Canal Duplication: A Case Report.

Landon E Ebbert¹, David Crockett^2,3, Nathan C Page^2,3

¹Mayo Clinic Alix School of Medicine, Scottsdale, AZ, USA.

Ear, Nose, & Throat Journal

|April 12, 2025

Summary

This summary is machine-generated.

This case study highlights the surgical management of bilateral external ear canal duplication in a pediatric patient. Successful surgical excision resolved recurrent abscesses and otorrhea, improving hearing outcomes.

Keywords:

conductive hearing loss congenital mass ear canal duplication first branchial cleft anomaly postauricular abscess

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Area of Science:

Otolaryngology
Pediatric Surgery
Medical Imaging

Background:

Bilateral external ear canal duplication is a rare congenital anomaly.
Recurrent postauricular abscesses, otorrhea, and conductive hearing loss presented in an 8-year-old female.
Previous treatments for abscesses provided limited long-term relief.

Purpose of the Study:

To describe the clinical presentation and surgical management of bilateral external ear canal duplication.
To emphasize the importance of early diagnosis and intervention for optimal patient outcomes.

Main Methods:

Clinical examination, audiometry, and head CT scan were utilized for diagnosis.
Surgical exploration and excision of the duplicated ear canals were performed via postauricular incisions.
Postoperative follow-up assessed for complications and symptom recurrence.

Main Results:

Surgical excision successfully removed cystic masses, cartilaginous remnants, and fibrotic tissue.
The patient experienced uneventful wound healing with no recurrence of otorrhea or abscesses within 12 weeks.
Audiometry indicated asymmetric hearing, with mild-to-moderate conductive hearing loss in the left ear.

Conclusions:

Surgical intervention is effective in managing the complications associated with external ear canal duplication.
Prompt diagnosis and appropriate surgical treatment are crucial for favorable outcomes in pediatric patients.
This case underscores the need for vigilance in identifying and treating rare congenital ear anomalies.