Sinusitis .

  • Acute sinusitis is an acute bacterial or viral infection of the paranasal sinuses.
  • Main causes: upper respiratory tract infection, trauma, oroantral communication, dental infection, nasal defect and allergic mucosal edema.
  • Radiographic features: air-liquid level, air bubbles, mucosal thickening partially or total opacification of the sinus.
  • Chronic sinusitis: The inflammation of the sinuses has been present for more than 3 months.
  • Main causes: persistent antral infection, persistent presence of a foreign body or an oroantral communication.

Case 1

Opacification of the right maxillary sinus

Case 2

Acute sinusitis. Air-fluid level of the right sinus.

Case 3

Pansinusitis: Inflammation of all paranasal sinuses on one or both sides. CBCT images show complete opacification of the frontal sinuses, ethmoid sinuses, maxillary sinuses and sphenoid sinuses.

Case 4

Chronic sinusitis in the right antrum: Thickened mucosal lining and thickening of the antral wall.

Case 5

Mucosal thickening in the sphenoid sinuses.

Case 6

Mucosal thickening in the left frontal sinus, ethmoidal sinus and sphenoidal sinus.