Sinus of Morgagni (pharynx)


In the pharynx, the sinus of Morgagni is the enclosed space between the upper border of the superior pharyngeal constrictor muscle, the base of the skull and the pharyngeal aponeurosis.

Contents

Structures passing through this sinus are:
  1. Cartilaginous part of Auditory tube
  2. Levator veli palatini muscle
  3. Ascending palatine artery
  4. Palatine branch of Ascending pharyngeal artery

    Clinical aspect

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: