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Updated: Jul 14, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
M H Valstar1, H P van den Akker
1Department of Oral and Maxillofacial Surgery, Academic Medical Centre and Academic Centre for Dentistry (ACTA), University of Amsterdam, Meibergdreef 9, P.O. Box 22660, 1100 DD Amsterdam, The Netherlands. mhvalstar@gmail.com
Excessive maxillary sinus air and a patent nasopalatine duct can mimic oroantral perforation, leading to misdiagnosis. Consider this rare condition when postoperative tests contradict radiographic findings after maxillary molar extraction.
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