iii ) Skull base / Temporal Bone

Dissection and Aneurysm will be covered in section iv)

The relevant DDx is pulsatile tinnitus with a vascular mass in the middle ear:

4) aberrant ICA

if this diagnosis is not made and surgery is done a 3) pseudoaneurysm can result

glomus tympanicum / glomus jugulotympanicum

Case in Point (2/23/2007)

6) Jugular dehiscence

Others to consider are:

8) High riding juglar bulb

7) Jugular diverticulum

5) Persistent stapedial artery

Case in Point (8/2/2006)

Reference: