Figure 7. DVT images in coronal plane in different patients with inflammatory changes of the paranasal sinuses.

a) 56-year-old female patient with chronic rhinosinusitis presenting with new onset of pain and feeling of pressure in the left maxillary sinus. Obstruction of the ostiomeatal complex (arrow).

b) 72-year-old patient with chronic sinusitis and multiple surgical treatments. Exacerbation and new onset of pain in the right maxillary sinus. DVT demonstrates inflammatory tissue swelling. The mucocele of the frontal sinus was asymptomatic.

c) 22-year-old female patient with recurrent rhinosinusitis and bilateral facial pain. Complete opacification of the left maxillary sinus and obstruction of right ostiomeatal complex.