THE NORMAL NASAL CAVITY  
THE EUSTACHIAN TUBE ORIFICE (LEFT)

THE EUSTACHIAN TUBE ORIFICE (LEFT)

Description : The torus tubarius (Eustachian tube orifice) is formed by the medial end of the Eustachian tube, which projects into the lateral wall of the nasopharynx, an consequently can only be seen by means of conventional posterior rhinoscopy (mirror examination of the nasopharynx), or, as in this case by means of a nasal endoscope.

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