Accessory maxillary ostium (AMO) is one of the anatomical variations in the maxillary sinus. It can be present in different sizes, shapes, and locations. We here reported a case of a rare variation of AMO with large size in a patient with chronic rhinosinusitis. It is important to identify the presence of AMO especially in patients with chronic rhinosinusitis as it can lead to mucus recirculation and disease persistence.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7785507PMC
http://dx.doi.org/10.7759/cureus.11921DOI Listing

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