Surgical anatomy of the superior hypophyseal artery and its relevance for endoscopic endonasal surgery

Journal of Neurosurgery
Huy Q TruongJuan C Fernandez-Miranda

Abstract

The endoscopic endonasal approach has become a routine corridor to the suprasellar region. The superior hypophyseal arteries (SHAs) are intimately related to lesions in the suprasellar space, such as craniopharyngiomas and meningiomas. Here the authors investigate the surgical anatomy and variations of the SHA from the endoscopic endonasal perspective. Thirty anatomical specimens with vascular injection were used for endoscopic endonasal dissection. The number of SHAs and their origin, course, branching, anastomoses, and areas of supply were collected and analyzed. A total of 110 SHAs arising from 60 internal carotid arteries (ICAs), or 1.83 SHAs per ICA (range 0-3), were found. The most proximal SHA always ran in the preinfundibular space and provided the major blood supply to the infundibulum, optic chiasm, and proximal optic nerve; it was defined as the primary SHA (pSHA). The more distal SHA(s), present in 78.3% of sides, ran in the retroinfundibular space and supplied the stalk and may also supply the tuber cinereum and optic tracts. In the two sides (3.3%) in which no SHA was present, the territory was covered by a pair of infundibular arteries originating from the posterior communicating artery. Two-thirds of the pSHAs o...Continue Reading

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Citations

Sep 19, 2020·Acta neurochirurgica·Amani BelouaerRoy Thomas Daniel
Nov 28, 2020·Journal of Neurosurgical Sciences·Hanna N AlgattasPaul A Gardner
Nov 28, 2020·Journal of Neurosurgical Sciences·Joao P AlmeidaFred Gentili

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Methods Mentioned

BETA
dissection
pSHA

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