Terminology and Classification

Frontoethmoidectomy: This procedure involves opening of the frontal recess together with an anterior ethmoidectomy (previously described) (Fig. 5.38). This is only achievable with knowledge of the detailed anatomy in the area and it requires enlargement of the frontal recess with mucosal preservation at all cost.

Frontal sinusotomy I: No instrumentation of the frontal recess is required when the uncinate process is attached to the skull base or middle turbinate; when the uncinate process has been removed, the recess is open unless there are large agger nasi air cells, a bulla frontalis, or a supraorbital cell (Fig. 5.39).

Recessus Frontalis
Fig. 5.38 In addition to an infundibulotomy and anterior eth-moidectomy, the frontal recess is opened.
Concha Bullosa
Fig. 5.40 Postoperative view of type II frontal sinusotomy.

Fig. 5.39 Postoperative view of type I frontal sinusotomy.

Frontal Sinusotomy Type
Fig. 5.41 Postoperative view of type III frontal sinusotomy.

Frontal sinusotomy II: Enlarging the frontal recess by the submucosal removal of agger nasi air cells, bulla frontalis, or a supraorbital cell (Fig. 5.40)

Frontal sinusotomy III: Extended enlargement with removal of the frontonasal spine or "beak" (Fig. 5.41 ). ayn 7,8

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Essentials of Human Physiology

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