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Summary
Postmortem examinations found septa or synechiae in the straight sinus in 44% of cases. These anatomical variations can mimic thrombi on imaging and alter cerebral angiography appearances.
Area of Science:
- Neuroanatomy
- Radiology
- Pathology
Background:
- The straight sinus is a critical venous channel in the brain.
- Accurate interpretation of cerebral angiography is vital for diagnosis.
- Anatomical variations can complicate radiological assessments.
Purpose of the Study:
- To investigate the prevalence of septa and synechiae within the straight sinus.
- To highlight the potential for misinterpretation of these findings as thrombi.
- To underscore the significance of these variations in cerebral angiography.
Main Methods:
- Postmortem examination of the straight sinus.
- Supplementation with radiography in select cases.
Main Results:
- Septa or synechiae were identified in 44 out of 145 cases (30.3%).
- These findings can be mistaken for straight sinus thrombosis.
- The presence of septa can alter the sinus's appearance across serial cerebral angiograms.
Conclusions:
- Straight sinus septa and synechiae are relatively common anatomical findings.
- Radiologists must differentiate these structures from thrombi.
- Awareness of these variations is crucial for accurate interpretation of cerebral angiography.