ArticleSurgical and radiologic anatomy : SRA2025
Mastoid pouch of the sigmoid sinus- an extraordinary anatomical variant.
Article in Surgical and radiologic anatomy : SRA, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- The Possible Relationship Between Sigmoid Dehiscence, Degree of Mastoid Pneumatization, and Sigmoid Sinus Position in Patients with Pulsatile Tinnitus.Diagnostics (Basel, Switzerland) · 2026Article
- Global prevalence of high jugular bulb and jugular bulb dehiscence: a systematic review and meta-analysis.Anatomical science international · 2026Review
- Focally deficient bilateral lateral mastoid walls: an unusual anatomical variation-a case report.Surgical and radiologic anatomy : SRA · 2025Article
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Authors and funding
3 authors.
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Abstract
purposeThe dural sigmoid sinus (SS) is a major surgical landmark. It is aimed to report an extraordinary and clinically significant anatomical variation- the mastoid pouch of the SS, which replaces the mastoid air cells.
methodThe archived angioCT file of a 45 y.o. male was retrospectively studied on planar sections and by three-dimensional volume renderings.
resultsAn expansive mastoid pouch of the left SS was found, measuring 1.74 cm in transverse diameter and 2.18 cm in sagittal diameter, replacing the typical mastoid air cell system. This SS pouch extended to the mastoid cortex and was covered by a robust (1.41 cm broad) tegmen sinus sigmoidei. The bony wall between the SS pouch and the mastoid portion of the facial canal was 4.65 mm thick.
conclusionThe marked venous encroachments into the mastoid region emphasise the necessity for comprehensive preoperative imaging and careful selection of surgical approaches to prevent inadvertent vascular compromise.
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