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  Indian J Med Microbiol
 

Figure 5: Magnetic resonance venogram (a), left common carotid angiogram in venous phase (indirect venography), lateral (b) and frontal (c) views, showing right sigmoid sinus diverticulum (arrow), measuring approximately 10 mm × 15 mm with a prediverticular stenosis (curved arrow). Right sigmoid sinus direct venogram through ipsilateral internal jugular access, lateral view (d) showing the sigmoid sinus diverticulum (arrow) and prediverticular stenosis (curved arrow). The pressure gradient was 9 mmHg (13–4 mmHg across the stenosis)

Figure 5: Magnetic resonance venogram (a), left common carotid angiogram in venous phase (indirect venography), lateral (b) and frontal (c) views, showing right sigmoid sinus diverticulum (arrow), measuring approximately 10 mm × 15 mm with a prediverticular stenosis (curved arrow). Right sigmoid sinus direct venogram through ipsilateral internal jugular access, lateral view (d) showing the sigmoid sinus diverticulum (arrow) and prediverticular stenosis (curved arrow). The pressure gradient was 9 mmHg (13–4 mmHg across the stenosis)