thrombus

Detachment of a portion of the thrombus, according to Hoare, may result in the lodgment of an embolus in the brain or kidneys.

In removing the bone overlying the infected thrombus, the gouge and chisel should be used rather than the bone forceps or burr.

The next step is to incise the sinus freely from above downwards towards the jugular fossa and curette out the thrombus.

The thrombus is then curetted out and the dissected portion of the jugular vein cut off as high up as possible.

It is known as a white thrombus or laminated clot, and is often met with in the sac of an aneurysm (Fig. 72).