Granular Foveolae in the Groove of the Sigmoid Sinus: An Anatomical Study.

Autor:	Guduri P; Tulane University School of Medicine, New Orleans, USA., Ekanem UI; Tulane University School of Medicine, New Orleans, USA., Shekhawat D; Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, USA., Chaiyamoon A; Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, THA., Cardona JJ; Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, USA., Iwanaga J; Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, USA.; Department of Neurology, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, USA., Dumont AS; Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, USA., Tubbs RS; Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, USA.; Department of Neurology, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, USA.; Department of Anatomical Sciences, St. George's University, St. George's, GRD.; Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, USA.; Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, USA.
Jazyk:	angličtina
Zdroj:	Cureus [Cureus] 2023 Mar 25; Vol. 15 (3), pp. e36678. Date of Electronic Publication: 2023 Mar 25 (Print Publication: 2023).
DOI:	10.7759/cureus.36678
Abstrakt:	Background Granular foveolae in the groove of the sigmoid sinus have rarely been reported in the literature compared to numerous published reports on the granular foveolae near the superior sagittal sinus and its sulcus on the internal aspect of the calvaria. The present study was performed to better elucidate their prevalence and locations. Materials and methods One hundred and ten adult dry skulls (220 sides) were analyzed for the presence of granular foveolae within the groove of the sigmoid sinus. The exact position of the foveolae was documented, and the diameter of the granular foveola was measured. Results Granular foveolae were found in the groove of the sigmoid sinus on 3.6% of the sides. These were at or within a mean of 1.3 cm inferior to the transverse-sigmoid junction. When a mastoid foramen was noted in the groove, it was always located inferior to the granular foveolae when present. The mean diameters of the granular foveolae of the left groove of the sigmoid sinus were 2.8 mm and 4 mm for the right grooves. The mean depth of the granular foveolae in the left groove of the sigmoid sinus was 2.7 mm and 3.5 mm for the right grooves. Granular foveolae were statistically larger and deeper on the right versus left sides (p<0.05). Conclusions Granular foveolae of the groove of the sigmoid sinus were identified most commonly on the right sides and 3.6% on all sides. If identified on medical imaging, these uncommon structures at the skull base should be considered normal anatomical variations. Competing Interests: The authors have declared that no competing interests exist. (Copyright © 2023, Guduri et al.)
Databáze:	MEDLINE
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