Radologcal Evaluaton of the Recesses on the Posteror Wall of the Nasopharynx wth Cone-beam Computed Tomography

Kaplan F. A., Saglam H., Bilgir E., Bayrakdar İ. Ş., Orhan K.

NIGERIAN JOURNAL OF CLINICAL PRACTICE, vol.25, no.1, pp.55-61, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.4103/njcp.njcp_559_20
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, EMBASE, MEDLINE
  • Page Numbers: pp.55-61
  • Keywords: Cone-beam computed tomography, Eustachian tube, nasopharynx, pharyngeal bursa, Rosenmuller fossa, EUSTACHIAN-TUBE, ANATOMY, AIRWAY, FOSSA, ROSENMULLER, CBCT
  • Eskisehir Osmangazi University Affiliated: Yes


Background: The posterior wall of the nasopharynx is composed of loose connective tissue that includes many important anatomical structures. Various structures, such as the opening of the Eustachian tube (ET), the Rosenmuller fossa (RF), and the pharyngeal bursa (PB) are found here. Aim: To evaluate the nasopharynx posterior wall anatomic structures, including the Eustachian tube, Rosenmuller fossa, and pharyngeal bursa with cone-beam computed tomography. Materials and Methods: The depth, width, and length of the Eustachian tube, Rosenmuller fossa, and pharyngeal bursa were measured in 150 patients using axial-sagittal cone-beam computed tomography. The Eustachian tube and Rosenmuller fossa distance to the midsagittal plane, the coronal region passing through the posterior end of the nasal septum, the superior-inferior extremity of the recesses, and the nasal floor plane distance were measured. The relationship between Rosenmuller fossa types and other parameters were evaluated. Results: The incidence of right Rosenmuller fossa types 1, 2, and 3 were 16%, 18%, and 66%, respectively, and that of the left Rosenmuller fossa types 1, 2, and 3 were 16%, 19.3%, and 64.7%, respectively. The mean pharyngeal bursa width, length, and depth were 10.8, 5.7, and 4.0 mm, respectively; those of the Eustachian tube were 5.6, 7.1, and 7.3 m, respectively; those of the right Rosenmuller fossa were 4.0, 12.4, and 10.5 mm, respectively; and those of the left Rosenmuller fossa were 3.8, 12.5, and 10.9 mm, respectively. Conclusions: The posterior wall of the nasopharynx contains several important anatomical structures. Evaluation of these using cone-beam computed tomography has many clinical and radiological advantages. To understand and interpret the coincidental findings in CBCT, dental radiologists should have access to more detailed information concerning the anatomy of the nasopharynx.