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Related Experiment Videos

Origin of the choanal polyp.

O Berg1, C Carenfelt, C Silfverswärd

  • 1Department of Otorhinolaryngology, Karolinska Hospital, Stockholm, Sweden.

Archives of Otolaryngology--Head & Neck Surgery
|November 1, 1988
PubMed
Summary

Choanal polyps originate from expanding intramural cysts within the maxillary sinus. These cysts protrude through the sinus opening into the nasal cavity, forming the polyp.

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Area of Science:

  • Otolaryngology
  • Rhinology
  • Pathology

Background:

  • Choanal polyps are a common sinonasal condition.
  • Their exact origin, particularly from the maxillary sinus, remains debated.

Purpose of the Study:

  • To investigate the origin of choanal polyps.
  • To elucidate the relationship between maxillary sinus cysts and choanal polyps.

Main Methods:

  • Surgical exploration of the maxillary sinus using a preservative technique in 15 patients with choanal polyps.
  • Histopathological examination of antral cysts and comparison with common intramural cysts of the maxillary sinus.

Main Results:

  • An antral cyst or cystic rudiment was identified in all 15 patients, typically attached to the inferolateral sinus wall.
  • The macroarchitecture and microarchitecture of these antral cysts were identical to common intramural cysts of the maxillary sinus.

Conclusions:

  • Choanal polyps develop from intramural cysts within the maxillary sinus.
  • Expanding intramural cysts protrude through the maxillary ostium into the nasal cavity, leading to choanal polyp formation.

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