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hiatus semilunaris

   Also found in: Wikipedia 0.01 sec.
hiatus sem·i·lu·nar·is (sm-l-nârs)
n.
A groove in the lateral wall of the middle meatus of the nasal cavity, into which the maxillary sinus, the frontonasal duct, and the middle ethmoid cells open.


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5,6) Note that a Lusk ball probe was passed from the hiatus semilunaris superiorly into the ethmoid bulla through its patent ostium.
Endoscopic views of the ostia and ostia-like structures in the ... by Yanagisawa, Ray / Ear, Nose and Throat Journal
The anterior ethmoid cells drain into the middle meatus--of ten through the hiatus semilunaris superior, but sometimes through the anterior or lateral bulla wall, the ethmoid infundibulum, the hiatus semilunaris inferior, or the retrobullar recess.
An unusual lateral ostium of a concha bullosa of the middle ... by Christmas, Dewey A. / Ear, Nose and Throat Journal
7) The secretions then traverse from the hiatus semilunaris to the medial wall of the inferior turbinate, and then they move posteriorly to the nasopharynx.
Iatrogenic maxillary sinus recirculation and beyond. (Original ... by Houser, Steve / Ear, Nose and Throat Journal
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