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. 2024 Jul 29;8(5):CASE24218. doi: 10.3171/CASE24218

FIG. 2.

FIG. 2.

A: In the EMMM, the anterior end of the inferior turbinate is incised. B: The medial wall of the maxillary sinus is placed in a clear view. The nasolacrimal duct is identified, and the bony nasolacrimal duct is drilled out. C: The nasolacrimal duct and inferior turbinate are swung inward to expose the medial wall of the maxillary sinus. The medial wall of the maxillary sinus is drilled out to open the maxillary sinus. When the medial wall of the maxillary sinus is sufficiently expanded, observation of the posterior and lateral walls of the maxillary sinus becomes easier. IT = inferior turbinate; LW = lateral wall; MW = medial wall; ND = nasolacrimal duct; NS = nasal septum; PW = posterior wall.