Highest nasal concha

The highest nasal concha or supreme nasal concha is a nasal concha (turbinate) that occurs in some cases. It is shaped like a seashell and found on the posterosuperior part of the lateral nasal wall. It lies on the medial surface of the labyrinth of ethmoid above the superior nasal concha. This makes the highest of four nasal conchae, and the highest of three on the ethmoid bone. It is often no more than a small, simple crest protruding from the nasal wall.