ENDOSCOPIC ANTOMICAL LANDMARK OF THE PTERYGOPALATINE FOSSA IN VIETNAMESE ADULT CADAVERS

Ngô Văn Công1,, Nguyễn Đình Tú1, Trần Minh Trường1
1 University of Medicine and Pharmacy at Ho Chi Minh City

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Abstract

Background: The pterygopalatine fossa  is a deep area and has a complex vascular structure, which should be understood when treating tumors in the nasopharynx or ligation of the blood vessels. Understand the endoscopic anatomical features of  the pterygopalatine fossa  to access this area safely. Objectives: To study the characteristics of anatomical landmarks in the pterygopalatine fossa through endoscopic dissection of fresh cadavers. Methods: Cross-sectional descriptive study. From September 2020 to June 2021, we examined 10 fresh cadaveric samples at The Anatomy Department – University of Medicine and Pharmacy at HCM city and recorded the characteristics of anatomical landmarks. Mean distance between the anterior nasal spine and the ethmoidal crest was 59,38 ± 4,47 mm. Mean distance between the anterior nasal spine and the posterior wall of maxillary sinus was 64,4 ± 6,89 mm. . Mean distance between the anterior nasal spine and the internal maxillary artery was 62,68 ± 5,73mm. The diameter of the internal maxillary artery is 3.3 ± 0.72 mm. The diameter of the sphenopalatine artery is 2,5 ± 0,61 mm. The palatine sphenoid artery after exiting the palatine foramen into the nasal cavity divides into 2 main branches in 20% of cases, 80% has only 1 main branch. Results: The study provides endoscopic characteristics of the palatine fossa vasculature. From there, it can be applied in selective arterial embolization in surgery for tumors of the nasal cavity, sinuses, the pterygopalatine fossa and other areas of the skull base or as an alternative to inserting posterior nasal packing to control nose bleeding.

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References

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