Endoscopic identification of the pharyngeal (palatovaginal) canal: An overlooked area

Islam R. Herzallah, Sameh Amin, Mona A. El-Hariri, Roy R Casiano

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objective: The pharyngeal or palatovaginal canal (PC) is a small tunnel that lies between the sphenoid process of the palatine bone and the vaginal process of the sphenoid bone. Currently, little endoscopic information is available about this region. Design and Setting: Endoscopic endonasal cadaveric study. Subjects and Methods: Twenty sides in 10 adult cadaver heads were studied endoscopically. The sphenopalatine foramen (SPF) and the adjacent pterygopalatine fossa were exposed. Dissection medial to the vidian canal demonstrated a tunnel that runs posteromedially in the sphenoid floor. Endoscopic data were documented. Additionally, canal measurements were obtained on 20 sides from coronal CT scans of paranasal sinuses. Results: The PC was identifiable in 85% of the sides, although thickness of its bony wall was variable. The endoscopic relationship of the canal and its artery with other landmarks is described. Radiologically, the diameter of the PC averaged 1.7 mm, and the mean distance from the PC to the vidian canal was 3.78 mm. Conclusion: The current study provides a novel endoscopic identification of an overlooked canal. The pharyngeal artery can be a source of bleeding during extended endoscopic procedures. The PC itself could be a place for finger-like projections of anatomically related neoplasms.

Original languageEnglish
Pages (from-to)352-357
Number of pages6
JournalJournal of Neurological Surgery, Part B: Skull Base
Volume73
Issue number5
DOIs
StatePublished - Jan 1 2012

Fingerprint

Pterygopalatine Fossa
Arteries
Sphenoid Bone
Hard Palate
Paranasal Sinuses
Cadaver
Dissection
Head
Hemorrhage
Neoplasms

Keywords

  • Endoscopic sinus surgery
  • Epistaxis
  • Palatovaginal canal
  • Pharyngeal artery
  • Pharyngeal canal
  • Pterygopalatine fossa
  • Sphenopalatine foramen
  • Vidian canal

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Endoscopic identification of the pharyngeal (palatovaginal) canal : An overlooked area. / Herzallah, Islam R.; Amin, Sameh; El-Hariri, Mona A.; Casiano, Roy R.

In: Journal of Neurological Surgery, Part B: Skull Base, Vol. 73, No. 5, 01.01.2012, p. 352-357.

Research output: Contribution to journalArticle

@article{c3a599911b7e4cc2b77b1f3c53fa9251,
title = "Endoscopic identification of the pharyngeal (palatovaginal) canal: An overlooked area",
abstract = "Objective: The pharyngeal or palatovaginal canal (PC) is a small tunnel that lies between the sphenoid process of the palatine bone and the vaginal process of the sphenoid bone. Currently, little endoscopic information is available about this region. Design and Setting: Endoscopic endonasal cadaveric study. Subjects and Methods: Twenty sides in 10 adult cadaver heads were studied endoscopically. The sphenopalatine foramen (SPF) and the adjacent pterygopalatine fossa were exposed. Dissection medial to the vidian canal demonstrated a tunnel that runs posteromedially in the sphenoid floor. Endoscopic data were documented. Additionally, canal measurements were obtained on 20 sides from coronal CT scans of paranasal sinuses. Results: The PC was identifiable in 85{\%} of the sides, although thickness of its bony wall was variable. The endoscopic relationship of the canal and its artery with other landmarks is described. Radiologically, the diameter of the PC averaged 1.7 mm, and the mean distance from the PC to the vidian canal was 3.78 mm. Conclusion: The current study provides a novel endoscopic identification of an overlooked canal. The pharyngeal artery can be a source of bleeding during extended endoscopic procedures. The PC itself could be a place for finger-like projections of anatomically related neoplasms.",
keywords = "Endoscopic sinus surgery, Epistaxis, Palatovaginal canal, Pharyngeal artery, Pharyngeal canal, Pterygopalatine fossa, Sphenopalatine foramen, Vidian canal",
author = "Herzallah, {Islam R.} and Sameh Amin and El-Hariri, {Mona A.} and Casiano, {Roy R}",
year = "2012",
month = "1",
day = "1",
doi = "10.1055/s-0032-1322798",
language = "English",
volume = "73",
pages = "352--357",
journal = "Journal of Neurological Surgery, Part B: Skull Base",
issn = "2193-6331",
publisher = "Thieme Medical Publishers",
number = "5",

}

TY - JOUR

T1 - Endoscopic identification of the pharyngeal (palatovaginal) canal

T2 - An overlooked area

AU - Herzallah, Islam R.

AU - Amin, Sameh

AU - El-Hariri, Mona A.

AU - Casiano, Roy R

PY - 2012/1/1

Y1 - 2012/1/1

N2 - Objective: The pharyngeal or palatovaginal canal (PC) is a small tunnel that lies between the sphenoid process of the palatine bone and the vaginal process of the sphenoid bone. Currently, little endoscopic information is available about this region. Design and Setting: Endoscopic endonasal cadaveric study. Subjects and Methods: Twenty sides in 10 adult cadaver heads were studied endoscopically. The sphenopalatine foramen (SPF) and the adjacent pterygopalatine fossa were exposed. Dissection medial to the vidian canal demonstrated a tunnel that runs posteromedially in the sphenoid floor. Endoscopic data were documented. Additionally, canal measurements were obtained on 20 sides from coronal CT scans of paranasal sinuses. Results: The PC was identifiable in 85% of the sides, although thickness of its bony wall was variable. The endoscopic relationship of the canal and its artery with other landmarks is described. Radiologically, the diameter of the PC averaged 1.7 mm, and the mean distance from the PC to the vidian canal was 3.78 mm. Conclusion: The current study provides a novel endoscopic identification of an overlooked canal. The pharyngeal artery can be a source of bleeding during extended endoscopic procedures. The PC itself could be a place for finger-like projections of anatomically related neoplasms.

AB - Objective: The pharyngeal or palatovaginal canal (PC) is a small tunnel that lies between the sphenoid process of the palatine bone and the vaginal process of the sphenoid bone. Currently, little endoscopic information is available about this region. Design and Setting: Endoscopic endonasal cadaveric study. Subjects and Methods: Twenty sides in 10 adult cadaver heads were studied endoscopically. The sphenopalatine foramen (SPF) and the adjacent pterygopalatine fossa were exposed. Dissection medial to the vidian canal demonstrated a tunnel that runs posteromedially in the sphenoid floor. Endoscopic data were documented. Additionally, canal measurements were obtained on 20 sides from coronal CT scans of paranasal sinuses. Results: The PC was identifiable in 85% of the sides, although thickness of its bony wall was variable. The endoscopic relationship of the canal and its artery with other landmarks is described. Radiologically, the diameter of the PC averaged 1.7 mm, and the mean distance from the PC to the vidian canal was 3.78 mm. Conclusion: The current study provides a novel endoscopic identification of an overlooked canal. The pharyngeal artery can be a source of bleeding during extended endoscopic procedures. The PC itself could be a place for finger-like projections of anatomically related neoplasms.

KW - Endoscopic sinus surgery

KW - Epistaxis

KW - Palatovaginal canal

KW - Pharyngeal artery

KW - Pharyngeal canal

KW - Pterygopalatine fossa

KW - Sphenopalatine foramen

KW - Vidian canal

UR - http://www.scopus.com/inward/record.url?scp=84904325649&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904325649&partnerID=8YFLogxK

U2 - 10.1055/s-0032-1322798

DO - 10.1055/s-0032-1322798

M3 - Article

AN - SCOPUS:84904325649

VL - 73

SP - 352

EP - 357

JO - Journal of Neurological Surgery, Part B: Skull Base

JF - Journal of Neurological Surgery, Part B: Skull Base

SN - 2193-6331

IS - 5

ER -