case_images: PMC4014820_01
case_images: A 12-year-old boy with evidence of (a) petrous bone fracture and pneumocephalus on axial CT at the time of presentation. (b) MRV at the time revealed a flow void of the sigmoid sinus and external jugular vein, confirming the diagnosis of sigmoid sinus thrombosis
case_images: SNI-5-53-g002.jpg
case_images: PMC4014820_01_SNI-5-53-g002.jpg
case_images: F1
case_images: A computed tomography (CT) of the head [Figure 1a] on presentation revealed a small petrous bone fracture on the right side of the skull. A magnetic resonance venography (MRV) [Figure 1b] was ordered to evaluate the cranial vascular integrity, which demonstrated a flow void of the right sigmoid sinus and the right external jugular vein.
case_images: Repeat MRV demonstrating persistent flow void through the sigmoid sinus, but improved flow through external jugular vein after 3 days of anticoagulation therapy
case_images: SNI-5-53-g003.jpg
case_images: PMC4014820_01_SNI-5-53-g003.jpg
case_images: F2
case_images: The patient remained stable and on the third day of admission, a repeat MRV [Figure 2] demonstrated persistent flow void of the sigmoid sinus, but improved flow through the external jugular sinus.