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Coincidental radiographic findings in severe external otitis in nonimmunocompromised patients

E Laurikainen1, H Puhakka, H Rikalainen

  • 1Department of Otorhinolaryngology, Turku University Hospital, Finland.

Insights

Pseudomonas aeruginosa caused sudden, painful external otitis in three healthy patients. Diagnosis was challenging due to swelling and mastoiditis, a rare sign in non-immunocompromised individuals.

Area of Science:

  • Otolaryngology
  • Infectious Diseases

Background:

  • External otitis, commonly known as swimmer's ear, is an infection of the outer ear canal.
  • Pseudomonas aeruginosa is a common bacterium that can cause various infections.

Observation:

  • Three previously healthy patients presented with acute, severe external otitis.
  • Symptoms included sudden onset, significant pain, and marked periauricular swelling.
  • Radiological mastoiditis was observed in all cases, which is unusual for external otitis in non-immunocompromised patients.

Findings:

  • The causative agent was identified as Pseudomonas aeruginosa.
  • Diagnostic challenges arose from extensive swelling and mastoiditis, complicating early identification of external otitis.
  • All patients achieved full recovery following appropriate antibiotic treatment.

Implications:

  • This case series highlights a rare presentation of Pseudomonas aeruginosa external otitis with mastoiditis in healthy individuals.
  • It underscores the importance of considering unusual presentations and diagnostic signs in external otitis.
  • Prompt and appropriate treatment leads to favorable outcomes even in severe cases.

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