What is the fossa of Rosenmuller?

What is the fossa of Rosenmuller?

The fossa of Rosenmüller is a bilateral projection of the nasopharynx just below the skull base. It is also called the lateral pharyngeal recess or simply the pharyngeal recess. The fossa is covered by nasopharyngeal mucosa and is the most common site of origin of nasopharyngeal carcinoma (NPC).

What is a retention cyst in the nasopharynx?

Nasopharyngeal cyst refers to cystic swelling arising from midline and lateral wall of the nasopharynx. The commonest cyst arising from lateral wall is the nasopharyngeal branchial cyst, whereas the mucus retention cysts are the commonest to arise from the midline.

What causes nasopharyngeal cyst?

Tornwaldt cyst or Thornwaldt cyst or Nasopharyngeal cyst represents the remnant of notochord. It is usually small and accidentally diagnosed on MRI. Large sized cyst may presents with nasal, ear or cervical symptoms. Recurrent nasopharyngeal infection and trauma are common etiological factor.

What is Trotter’s triad?

Trotter’s triad is a unique symptom complex associated with malignant tumours invading the lateral wall of nasopharynx. Pathognomonic features in sequential order include ipsilateral conductive hearing loss, trigeminal nerve neuralgia affecting the mandibular division and palatal asymmetry.

Can Tornwaldt’s cyst cause symptoms?

Tornwaldt’s cyst represents a benign tumor which develops in the midline of the nasopharyngeal mucosa. Due to the fact that it doesn’t usually cause any symptoms, it is often discovered incidentally during a nasal endoscopy or another imaging investigation (either CT or MRI).

What causes a mucous retention cyst?

A mucocele or mucous retention cyst is a benign pathologic lesion. The lesion is a result of the extravasation of saliva from an injured minor salivary gland. The collection of extravasated fluid develops a fibrous wall around itself forming a pseudocyst.

How rare is a Thornwaldt cyst?

Tornwaldt cyst (TC) is a relatively rare but benign disease. It is a developmental lesion within the midline of the nasopharynx [1]. An incidence of 1.4–3.3% was reported by some authors in the literature [2,3].

How common are Thornwaldt cysts?

A Tornwaldt cyst has an autopsy prevalence of approximately 4%, with no gender predilection 3. These incidence found at autopsy studies in 1950s and 60s differs from findings in a recent incidence study using CT and/or MR, demonstrating incidence of only 0.06% 7.

What does salpingopharyngeus mean?

Medical Definition of salpingopharyngeus : a muscle of the pharynx that arises from the inferior part of the eustachian tube near its opening and passes downward to join the posterior part of the palatopharyngeus.