Sinus pericranii

Parietal

sinus pericranii with bilateral emissary veins. Colour Doppler ultrasound with spectral analysis shows vascular flow along both the intracranial superior sagittal sinus (venous flow in spectral analysis) and extracranial vessels with direct communication through the cranial defect.

Cerebrovascular

malformations • Sinus pericranii - Ganzer Fall bei Radiopaedia

Sinus

pericranii • Sinus pericranii - Ganzer Fall bei Radiopaedia

Sinus

pericranii • Sinus pericranii - Ganzer Fall bei Radiopaedia

Sinus

pericranii • Sinus pericranii - Ganzer Fall bei Radiopaedia

Sinus

pericranii • Sinus pericranii - Ganzer Fall bei Radiopaedia

Sinus

pericranii • Sinus pericranii - Ganzer Fall bei Radiopaedia

Chiari I

malformation • Chiari I and sinus pericranii - Ganzer Fall bei Radiopaedia

Sinus

pericranii associated with syntelencephaly: a case report. Imaging findings of syntelencephly, craniosynostosis, and sinus pericranii in the present case. a T2-weighted head MRI at age 2 years and 4 months. Abnormal midline connection between the cerebral hemispheres of the posterior frontal lobes and cingulate gyrus are shown (black arrow). The basal ganglia and thalamus are separated bilaterally (black arrow head). b Head computed tomography findings at age 4 months. The cranial sutures were not fused (white arrows). Tortuous and dilated subcutaneous veins were observed in the parietal region (white arrow heads). c Head computed tomography findings at age 2 years and 5 months. Two parietal skull bone defects (white arrows) and coronal craniosynostosis are visible. Digital impression on the skull was not evident. d T1-weighted head MRI at age 2 years and 4 months. Sinus pericranii (white arrow) via the parietal bone defect can be seen. The white arrowheads indicate distension of the subcutaneous veins in the parietal region. Callosal hypoplasia and ectopic gray matter around the lateral cerebral ventricles can also be observed. The black arrow indicates the tight posterior fossa and slight descent of the caudal part of the cerebellum toward the foramen magnum. Agenesis of the body of the corpus callosum and continuity of the cingulate gyrus across the midline are also shown. e Color cranial Doppler ultrasound findings at age 2 years and 5 months. Blood flow in two abnormal blood vessels (sinus pericranii) through the parietal bone defects to the extracranial veins can be seen (white arrow). The subcutaneous veins show distension (white arrow heads). f Cerebral angiography confirmed that the abnormal blood vessels formed a communication between the superior sagittal sinus and parietal diploic and subcutaneous veins (white arrows). No obvious thrombi, dural sinus abnormalities, or other vascular malformations were observed. The subcutaneous veins show distension (white arrow heads). L → R, left–right view (upper); A → P, anterior–posterior view (lower)

Parietal

sinus pericranii with bilateral emissary veins. Colour Doppler ultrasound depicts extracranial vessels and two abnormal transosseous feeders with turbulent flow.

A rare case

report of dominant paediatric sinus pericranii: food for thought!. MR venogram showing multiple large abnormal venous communications between superior sagittal sinus and the scalp swelling confirming dominant SP

A rare case

report of dominant paediatric sinus pericranii: food for thought!. A Multiple bony defects in the parieto-occipital skull bone (> 3 mm diameter). B Sagittal contrast-enhanced image showing heterogeneously enhancing scalp swelling

Imaging of

skull vault tumors in adults. Calvarial pseudolesions. NECT (a, c–f), T2WI (b), MR venography (g, h). Parasagittal occipital arachnoid granulation (a). Occipital encephalocele (b). Dilated vascular canals and lacunae (c). Hyperostosis frontalis interna (d). Bilateral thinning of the parietal bones (e). Enlarged parietal foramina (f). Congenital sinus pericranii (g). Iatrogenic acquired sinus pericranii from a prior ventricular drainage (h)

Parietal

sinus pericranii with bilateral emissary veins. Coronal oblique reconstruction 3D volume rendering MR depicts two emissary veins connecting the superior sagittal sinus with an extracranial varicose vein.

Parietal

sinus pericranii with bilateral emissary veins. Sagittal T1W SPGR C+ MR shows a prominent emissary vein traversing a cranial defect to supply the scalp venous mass.

Parietal

sinus pericranii with bilateral emissary veins. Axial T1W SPGR C+ MR shows bilateral prominent emissary veins feeding the dilated scalp vein.

Parietal

sinus pericranii with bilateral emissary veins. Colour Doppler ultrasound shows a transcranial vessel in communication with a dilated vascular structure that resembles a varicose vein.

Infant with

an occipital mass. Sagittal CT without contrast of the brain (above left) shows an occipital skull defect just below the mass. Sagittal T1 MRI without contrast of the brain (above right) shows multiple small flow voids in the mass. MRV with contrast of the brain (below) shows a persistent falcine sinus.The diagnosis was sinus pericranii.