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“M” line: New anatomical landmark for the maxillary sinus natural ostium
Author(s) -
Leite Janaina Gonçalves da Silva,
Nogueira Joao Flavio,
Pallanch John,
Costa Ticiana Cabral,
Feijão Moisés Ximenes,
Querido Raquel de Sousa Lobo Ferreira,
Cavalcante Maria Luzete Costa
Publication year - 2020
Publication title -
clinical otolaryngology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.914
H-Index - 68
eISSN - 1749-4486
pISSN - 1749-4478
DOI - 10.1111/coa.13456
Subject(s) - medicine , ostium , anatomical landmark , cadaver , landmark , maxillary sinus , tomography , anatomy , radiology , nuclear medicine , surgery , computer vision , computer science
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. Subjects and Methods Dissections were performed in 57 cadaver heads (114 sides). In addition, 73 computerised tomography (CT) scans (146 sides) of patients with chronic inflammatory sinonasal disease were analysed using a three‐dimensional (3D) reconstruction computer program. Results The "M" line crossed the MSNO in 112 dissected sides (98.2%) and 140 sides at CT 3D reconstruction (95.9%). Conclusion The "M" line is a reliable anatomical landmark for predicting MSNO location. As such, it could improve and facilitate endoscopic sinus surgery, using traditional, minimally invasive or uncinate preserving techniques.