Publications by authors named "Moises Ximenes Feijao"
Objective: Describe a reliable anatomical landmark that can be used to locate the maxillary sinus natural ostium (MSNO) during endoscopic surgery, even if the uncinate process is preserved.
Design: Descriptive anatomical.
Setting: An anatomical and radiological study was performed to evaluate the consistency of the landmark, denominated "M" line.