This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
The glomus tumor invasion of jugular bulb is diagnosed by 
Select and explain. 
A. Carotid angiography, B. Veebral venousvenography, C. X-ray, D. Jugular venography
D: Jugular venography
Answer: D: Jugular venography 
Explanation: MRI - gives soft tissue extent of tumor; Magnetic Resonance Angiography (MRA) shows compression of the carotid aery whereas magnetic resonance venography shows invasion of jugular bulb by the tumor.