supreme turbinate

supreme turbinate

A small, rudimentary fourth lateral turbinate, which is found in only about 30% of the population.
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All the variations of sinonasal anatomy described in literature except the presence of supreme turbinate were encountered in our study.
In addition, there were one each of the following; pneumatized supreme turbinate, pneumatized crystagalli, dehiscent roof of frontal sinus, rudimentary right maxillary sinus, absent inter sphenoid septum, pneumatized septum and rudimentary frontal sinus.
Most nasal passages have three turbinates: inferior, middle, and superior; when a fourth is present, it is located above the superior turbinate, and it is called the supreme turbinate. (1,2) The middle and superior turbinates are extensions of the ethmoid bone, whereas the inferior turbinate is an independent bony structure.
Supreme Turbinate: We could not discern the presence of supreme turbinate in any of our cases.
CONCLUSION: All the variations of sinonasal anatomy described in literature except the presence of supreme turbinate were encountered in our study.
(1) If a supreme turbinate is present, the ostium may be found in the supreme meatus.
Following complete removal of the polyps, the superior turbinate was well visualized; a supreme turbinate and supreme meatus were seen posterior to the superior turbinate (figure, C).
In some cases, a supreme turbinate is also present.