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Sinusoidal Sources01:18

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Direct current (DC) refers to an electric current that flows in a single direction, maintaining a constant polarity. This is in contrast to alternating current (AC), which periodically changes its direction and magnitude. AC forms the backbone of modern electricity transmission and distribution systems due to its efficient long-distance transmission capabilities.
In homes, the power supplies use sinusoidal sources to provide electricity. These sources generate a voltage that varies sinusoidally...
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Infra-auricular Sinus: A Very Rare Case Presentation.

Ahilasamy Nagalingeswaran1, Rajendran Dinesh Kumar2

  • 1Ahilasamy ENT Centre, Chennai, Tamil Nadu 600 042 India.

Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India
|November 22, 2019
PubMed
Summary

This case report details a rare infra-auricular sinus in a young male, successfully treated with surgical excision. Long-term follow-up confirmed no recurrence of this congenital condition.

Keywords:
AbscessExcisionPreauricular sinus

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Area of Science:

  • Otolaryngology
  • Surgical Pathology

Background:

  • Congenital infra-auricular sinuses are rare developmental anomalies.
  • Patients often present with recurrent infections, swelling, and discharge near the ear.

Purpose of the Study:

  • To report a rare case of an infra-auricular sinus.
  • To highlight the surgical management and histopathological findings.
  • To emphasize the rarity of this condition.

Main Methods:

  • A 22-year-old male with a congenital infra-auricular sinus was surgically treated.
  • The sinus tract and associated cyst were completely removed via an infra-auricular approach.
  • Histopathological examination confirmed the diagnosis.

Main Results:

  • The patient experienced recurrent swelling and foul-smelling discharge requiring intervention.
  • Surgical excision of the infra-auricular sinus tract and cyst was performed.
  • Histopathology confirmed the sinus as infra-auricular preauricular sinus.
  • No recurrence was observed during a 2-year follow-up period.

Conclusions:

  • Infra-auricular preauricular sinus is an exceptionally rare condition.
  • Complete surgical excision is an effective treatment modality.
  • This case underscores the importance of recognizing and managing rare congenital ear anomalies.