CT scan showing bilateral ethmoid and maxillary disease, with complete obliteration of both osteomeatal complexes. Because the most frequent local cause of chronic sinusitis is osteomeatal disease ...

Fungal cultures contained Curvularia. Axial CT scan through the ethmoid sinuses revealing complete opacification of the right anterior and posterior ethmoids as well as the right sphenoid sinus.

The four paranasal sinuses (maxillary, frontal, ethmoid and sphenoid) develop as outpouchings of the nasal mucosa. They remain connected to the nasal cavity via narrow ostia with a lumen diameter ...