At surgery, evidence of direct cavernous sinus invasion was demonstrated in 19.

These arteries are typically treated with coil embolization of the cavernous sinus.

No cases have been previously reported in the cavernous sinus or pituitary fossa.

Preoperative MR imaging infrequently detects dural invasion, including cavernous sinus invasion.

The brain MRI demonstrated strong enhancement of the right cavernous sinus.

Results: A certain number of signs eliminated cavernous sinus invasion.

Thirteen patients had a surgical invasion of the cavernous sinus.

In all patients CT findings included multiple irregular filling defects in the enhancing cavernous sinus.

We present 2 new cases of extra-axial ALMs involving the cavernous sinus and right temporal lobe.

Conclusions: Dural invasion by ACTH-producing adenomas preferentially occurs laterally into the wall of the cavernous sinus.

These plexuses drain into the systemic circulation by way of the cavernous sinus and superior vena cava.

The cavernous sinus was explored in 4 patients and the hyperostotic sphenoid ridge drilled in five patients.

If this percentage is greater than or equal to 66%, the cavernous sinus is invaded.

Several MRI signs are helpful for the preoperative MRI diagnosis of cavernous sinus invasion by an adenoma.

This experience indicates any type of pituitary adenoma, regardless of its endocrinologic activity, can invade the cavernous sinus.

The cavernous sinus was also opened.