Tuesday, June 20, 2017

Sinus of Morgagni- Contents

There occurs a gap in the pharyngeal wall between the base of the skull and superior constrictor muscle called as Sinus of Morgagni. This space is closed by the pharyngeobasilar fascia.

Contents- (mnemonic PLATE)

1. Palatine branch of ascending pharyngeal artery
2. Levator palati muscle
3. Ascending palatine artery
4. Tensor vetli palatini
5. Eustatian tube

In nasopharyngeal carcinoma, the tumor may extend laterally and involve this sinus involving the mandibular nerve. This produces a triad of symptoms known as Trotter's Triad. 
These symptoms are:
1) Conductive deafness 
2) Ipsilateral immobility of the soft palate
3) Trigeminal Neuralgia

Hope that helped!
Ashita Kohli

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