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Updated: Apr 18, 2026

Surgical Treatment of an Endolymphatic Sac Tumor
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Pre-auricular sinus: an uncommon presentation.

Wsj Ng1, Yk Chew2, Kl Tan3

  • 1MBBchBAO.

Malaysian Family Physician : the Official Journal of the Academy of Family Physicians of Malaysia
|January 22, 2015
PubMed
Summary
This summary is machine-generated.

An infected pre-auricular sinus can mimic other conditions, leading to misdiagnosis. Early recognition of this sinus variant can prevent unnecessary procedures and improve surgical outcomes.

Keywords:
Variant type pre-auricular sinuspost-auricular cyst

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Area of Science:

  • Otolaryngology
  • Dermatology
  • Surgical Pathology

Background:

  • Pre-auricular sinuses are congenital malformations that can become infected.
  • Infected pre-auricular sinuses can present atypically, mimicking other post-auricular swellings.
  • Common misdiagnoses include infected dermoid or sebaceous cysts, and mastoid abscesses.

Observation:

  • A 25-year-old Malay man presented with a recurrently infected post-auricular swelling.
  • Physical examination revealed an auricular pit at the crus of helix, indicative of a pre-auricular sinus.
  • Initial diagnosis was recurrent infected dermoid cyst, highlighting diagnostic challenges.

Findings:

  • Conservative management via blunt probing successfully drained pus from the sinus tract.
  • Surgical excision of the pre-auricular sinus was performed six weeks after the acute episode.
  • No recurrence was observed at three months post-surgery.

Implications:

  • Increased physician awareness of pre-auricular sinus variants is crucial for accurate diagnosis.
  • Timely recognition can prevent misdiagnosis, unnecessary interventions like incision and drainage, and reduce recurrence risk.
  • Appropriate management improves surgical outcomes for pre-auricular sinus infections.