ABSTRACT
Figure 21.1 A large right MMA through which the normal mucosa of the posterior wall of the maxillary sinus is seen (short arrow). The long arrow points to the middle turbinate
Figure 21.2 A smaller left MMA (short arrow) with thicker walls. Note also the sphenoidotomy (long arrow)
which narrows it
Figure 21.4 A left MMA which has acquired the appearance of a narrow and short tunnel (short arrow). The long arrow points to the junction of the medial and inferior orbital walls
long arrow points to a partially resected middle turbinate
Figure 21.6 A much thicker scar divides the right MMA into two small openings
Figure 21.7 A fibrous nodule lateral to the right middle turbinate (short arrow). The long arrow points to the posterior edge of the MMA
Figure 21.8 A polyp (short arrow) extruding from the right maxillary sinus through the MMA. The long arrow points to the middle turbinate
Figure 21.9 The dome of a retention cyst seen through a right MMA
Figure 21.10 The CT appearance of the cyst shown in Figure 21.9
Figure 21.11 A pseudocyst filling the left maxillary sinus and seen through the MMA
Figure 21.12 A polyp in the floor of the left maxillary sinus seen with a 70°-angle scope
polypoid mucosa, also seen with a 70°-angle scope
Figure 21.14 A right nasoantral window in the inferior meatus (short arrow). The long arrow points to the middle turbinate. Note that the inferior turbinate had been totally resected
Figure 21.15 A larger left nasoantral window (short arrow) with thicker edges. The long arrow points to the inferior turbinate
Figure 21.16 A stenotic left nasoantral window (short arrow). The long arrow points to the polypoid posterior tip of the stump of the inferior turbinate, which had been partially resected
Figure 21.17 A small left nasoantral window (short arrow) which must have been made inadvertently through the inferior turbinate (long arrow)!
