- Sinus of Morgagni is a gap in the upper margin of the pharyngobasilar fascia located in the posterolateral part of the nasopharynx
- Pharyngobasilar fascia – also called pharyngeal aponeurosis – is a fibrous layer which lines the internal surface of the muscles of the pharynx and is particularly thick in the upper part – between superior constrictor and the skull base
- Structures passing through the Morgagni
- Eustachian tube – cartilagenous end
- Levator veli palatini muscle
- Ascending palatine artery
- Clinical importance of sinus of Morgagni
- It provides a pathway of least resistance for spread of tumors from the nasopharynx to the lateral skull base
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