Answer of July 2005

Clinical History:

30-year-old male with Down¡¦s syndrome. Presented with a episodes of convulsions. No fever.

                                 CT Brain

                      CT brain with contrast

CT venography (3D reconstructional images, occipital area)

Diagnosis:

Dural Sinus Thrombosis

Discussion:

CT brain shows an acute hyperdense acute haematoma at right frontal lobe. 
CT brain with contrast shows filling defects in the superior sagittal sinus compatible with dural sinus thrombosis.
CT venography shows filling defects in the superior sagittal and sigmoid sinuses compatible with dural sinus thrombosis.