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Imaging of head trauma
Published in Helen Whitwell, Christopher Milroy, Daniel du Plessis, Forensic Neuropathology, 2021
Anterior temporal extradural haematoma in the middle cranial fossa is recognised as a benign entity resulting from disruption of the sphenoparietal sinus. It is lenticular in shape, limited laterally by the sphenotemporal suture, medially by the orbital fissure and below the lesser sphenoid wing. These are usually of small volume and with low risk of significant mass effect to cause uncal herniation and tend to remain stable or smaller on follow-up imaging.
Spindle cell oncocytoma of the neurohypophysis with metastasis to the sphenoparietal sinus and immunohistochemical negativity for S100 and epithelial membrane antigen (EMA)
Published in British Journal of Neurosurgery, 2023
Hanno M. Witte, Armin Riecke, Wolfgang Saeger, Carsten Hackenbroch, René Mathieu, Uwe Max Mauer, Chris Schulz
One year later, the patient developed complete oculomotor nerve palsy associated with the absence of the response of the right pupil to light and sixth nerve palsy on the left side. Contrast-enhanced MRI scans revealed a residual tumor in the region of the skull base which again showed marked progression and required repeat surgery. Transsphenoidal resection of the tumor was performed again two years after the initial presentation. By then, the SCO extended to the optic nerve on the right side and had led to a displacement of the pituitary stalk to the left with infiltration of both cavernous sinuses. In addition, MRI demonstrated tumor spread along the right sphenoparietal sinus. On the basis of this finding, the SCO was suspected to have metastasized, most likely via the hematogenous route (Figure 3). As a secondary finding, MRI showed areas of contrast enhancement in the region of the second cervical vertebra, which too were suspected to be metastases from the spindle cell oncocytoma of the hypophysis (Figure 4).
Endovascular treatment of carotid–cavernous sinus fistulas: ophthalmic and visual outcomes
Published in Orbit, 2019
Lee J. Holland, Ken Mitchell Ranzcr, John D. Harrison, Damien Brauchli, Yun Wong, Timothy J. Sullivan
Carotid cavernous fistulas (CCF) are abnormal communications inducing shunting of blood between the carotid arterial system and the cavernous sinus (CS), resulting in flow reversal in the veins draining through the CS. Flow may be directed anteriorly (ophthalmic venous system), posteriorly (inferior petrosal sinus (IPS), superior petrosal sinus, or the basilar plexus), laterally (sphenoparietal sinus), contralaterally (inter-CS), or inferiorly via the pterygoid plexus through the vein of the foramen rotundum and the vein of the foramen ovale. Commonly, a multidirectional revision of drainage occurs.1 Serious neuro-ophthalmic morbidity and mortality may result.