Endoscopic endonasal study of the cavernous sinus and quadrangular space: Anatomic relationships.

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Endoscopic endonasal study of the cavernous sinus and quadrangular space: Anatomic relationships.

Head Neck. 2016 Apr;38 Suppl 1:E1680-7

Authors: Dolci RL, Upadhyay S, Ditzel Filho LF, Fiore ME, Buohliqah L, Lazarini PR, Prevedello DM, Carrau RL

Abstract
BACKGROUND: The quadrangular space permits an anterior entry into Meckel's cave while obviating the need for cerebral or cranial nerve retraction. This avenue is intimately associated with the cavernous sinus; thus, from this ventral perspective, it is feasible to visualize the anteromedial, anterolateral, and Parkinson triangles.
METHODS: Twenty middle cranial fossae were dissected endonasally under direct endoscopic visualization. Measurements of the surface area of the quadrangular space and the ventrally accessible cavernous sinus triangles were performed using 3 coordinates under image-guided navigation.
RESULTS: The surface area of the quadrangular space was 16.36 mm(2) (±2.89 mm(2) ). The anterolateral triangle was the largest (47.27 ± 5.37 mm(2) ), whereas Parkinson's was the smallest (22.46 ± 5.54 mm(2) ); the anteromedial triangle presented an average surface area 36.07 mm(2) (±4.15 mm(2) ).
CONCLUSION: The trajectory of the internal carotid artery (ICA) significantly impacts the quadrangular space area and may be a potential parameter for defining the feasibility of this corridor. © 2016 Wiley Periodicals, Inc. Head Neck 38: E1680-E1687, 2016.

PMID: 26875705 [PubMed - indexed for MEDLINE]

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