Nagalingam, Harvinth (2022) A cadaveric study of anatomical variation of sphenoparietal sinus & superficial sylvian draining veins in Sabah population. Masters thesis, Universiti Sains Malaysia.
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Abstract
Background : The term "sphenoparietal sinus" was coined by Gilbert Breschet in an atlas of the venous system in the early nineteenth century (Breschet, 1829). Since then, many literatures have gained interest in knowing the sinus and the drainage. Drainage of superficial sylvian veins was consistent in many literatures however controversies exist. One of the key steps in the transsylvian and subtemporal approach is identifying this sinus and bridging veins from superficial sylvian vein (SSV) to create a wide surgical corridor. Hence, this study was aimed to delineate the microsurgical anatomy and variation of the sinus and sylvian draining veins. Methods : 30 fresh cadavers were examined in Forensic Department Queen Elizabeth Hospital between October 2020 to October 2021, were anatomically analysed and studied through a data collection sheet. All data were analysed using Statistical Package for the Social Science (SPSS) version 22.0. Results : The studied cadavers were 76% Male (n=23) and 23.3% female (n=7). The median age of cadavers is 52.5 years old with interquartile range of 14. All of Cadavers (100%, n=30) has Sphenoparietal sinus on both side and all draining to ipsilateral cavernous sinus. Number of superficial sylvian veins drainage (SSVD) varies from 0 veins up to 4 veins on both hemisphere. About 40% cadavers (n=12) has 3 SSV Vein draining on left hemisphere and 36.7% (n=11) has 2 and 3 draining veins on right side of hemisphere respectively. Only 3.3% of cadavers (n=1) has no draining veins on either side. Using McNemar test, there is no statistically significant difference of complexity between right and left hemisphere (p=0.332). It was noting to found that male group has more complex veins compare to female in the left hemisphere when compared with Fisher exact test (p=0.024). Based On cadaveric data, we have formulated new classification on SSV SPS drainage based on number of draining (bridging) veins. Type A (4 draining veins) Type B(3 draining veins) Type C ( 2 Draining veins) Type D ( 1 draining Vein) Type E (0 Draining veins) Conclusion: We have consolidated our hypothesis on the presence of SPS and variance in numbers of draining veins to SPS these new classifications is aimed at to provide new microsurgical nomenclature for future use in neuroanatomy and neurosurgery
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | sphenoparietal sinus, superficial sylvian veins |
| Subjects: | R Medicine R Medicine > RD Surgery |
| Divisions: | Kampus Kesihatan (Health Campus) > Pusat Pengajian Sains Perubatan (School of Medical Sciences) > Thesis |
| Depositing User: | MUHAMMAD AKIF AIMAN AB SHUKOR |
| Date Deposited: | 21 Apr 2026 06:34 |
| Last Modified: | 16 Jun 2026 08:34 |
| URI: | http://eprints.usm.my/id/eprint/63943 |
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