A CT scan of the paranasal sinuses reveals pneumatization of the vertical lamella of the middle turbinate. What is the most likely anatomical variant described?
- A Haller cell
- B Agger nasi cell
- C Concha bullosa ✓
- D Onodi cell
Correct answer: C. Concha bullosa
Explanation
Concha bullosa is pneumatization of the middle turbinate, most commonly involving the vertical lamella. It can cause nasal obstruction or contribute to ostiomeatal complex obstruction and recurrent sinusitis. Haller cells are infraorbital ethmoid cells, Agger nasi cells are anterior ethmoid cells, and Onodi cells are posterior ethmoid cells extending into the sphenoid sinus.
Reference: Cummings Otolaryngology: Head and Neck Surgery, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.