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Skull base surgery. 1994 July; 4(3): 145–150.
PMCID: PMC1661802

Intercavernous Venous Communications in the Human Skull Base


The intercavernous communications of the skull base were studied in 32 sphenoid blocks using electrolytic decalcification techniques, vascular filling, x-rays, and serial anatomical sections. In this study four intercavernous connections were found: anterior intercavernous sinus (AIS), posterior intercavernous sinus (PIS), inferior intercavernous sinus (IIS), and basilar plexus (BP). The AIS was present in 100% of the cases, with diameters ranging from 0.57 mm to 5.43 mm; in 17 cases (53.12%) it took up the whole anterior wall of the hypophyseal fossa. The PIS was also detected in 100% of the cases, and its diameters ranged from 0.71 mm to 4.14 mm. The IIS was identified in 31 cases (96.9%), assuming three different forms: plexuslike, venous lake, and mixed. The BP was found in 100% of the material analyzed; in 23 cases (71.9%) it proved to be the widest intercavernous communication.

In 12 cases of this series the hypophysis was completely enveloped by venous structures, except at the level of the sellar diaphragm.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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