ISSN 2398-2977      

Atheroma

pequis

Synonym(s): Epidermal inclusion cyst


Introduction

  • Cysts located in the dorsolateral aspect of the nasal diverticulum.
  • Signs: localized facial swelling at naso-maxillary notch, non-painful on palpation - usually asymptomatic.
  • Treatment: surgical removal usually under local anesthesia + sedation.
  • Diagnosis:history, signs, histopathology.
  • Prognosis: excellent with surgical removal; guarded with simple drainage.

Pathogenesis

Etiology

  • Unknown.

Pathophysiology

  • Originally thought to be sebaceous cysts but this diagnosis is now refuted by histology of cyst wall and contents.
  • Renamed epidermal inclusion cysts.
  • Developmental.

Timecourse

  • Develops slowly over many months.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Tremaine W H, Clarke C J & Dixon P M (2000) Histopathological findings in equine sinonasal disorders. Equine Vet J 31 (4), 296-303 PubMed.

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