The characteristic trigeminoma appeared as dumb bell with erosion of petrousbone.
三叉神经瘤表现为特征性哑铃形伴岩骨尖骨质破坏。
2
The jugular foramen can be exposed after removal of the mastoid process and the petrousbone under the labyrinth superiorly and by resection of jugular process posteriorly.
通过切除颈静脉突和迷路下骨质分别自后、外、下和上方显露颈静脉孔。
3
Conclusion The PSA can be accurately calculated by CT measurement, it has very important value in the imaging diagnosis of ear and petrousbone diseases for the head radiography.