Fig. 4

CT. Axial projection. State after radical resection of tumor masses—lack of the right superior and medial turbinate, medial wall of the right maxillary sinus, frontal walls of the sphenoid sinuses. Bare bone of the posterior part of the medial orbital wall, as mentioned in the text. The ethmoids that were well pneumatized before the surgical procedure are now filled with postoperative edematous tissues