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: Surgery
Adson test used for determining vascular sufficiency is useful in 
Select and explain. 
A. Peripheral vascular disease, B. Cervical rib, C. Varicose veins, D. AV fistula
B: Cervical rib
Answer: B: Cervical rib 
Explanation: SRB Manual of Surgery 4th edition, Pg 458 Adson's test :
The hand is raised above after feeling the radial pulse.
The patient is asked to take a deep breath and turn the same side. Any change in pulse, i.e. either becoming feeble or absent is noted. Adson's test is done in case of the Cervical rib. 
It is not useful in varicose veins, PVD or AV fistula.