Pharyngeal recess




Behind the ostium of the eustachian tube is a deep recess, the pharyngeal recess, also known as fossa of Rosenmüller.



At the base of this recess is the retropharyngeal lymph node, 



The Node of Rouvier is clinically significant in that it may be involved in certain head and neck cancers, notably Nasopharyngeal cancer.


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