This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
The Most common cause of a Mycotic aneurysm is 
Select and explain. 
A. Candida albicans, B. Treponema pallidum, C. Staphylococcus aureus, D. Pseudomonas aeuriginosa
C: Staphylococcus aureus
Answer: C: Staphylococcus aureus 
Explanation: Primary infection of the aoic wall results in aneurysm formation termed mycotic aneurysms, the pathogens usually are bacteria, most common being Staphylococcus aureus, Staphylococcus epidermidis, Salmonella, and Streptococcus. ref - Harrisons internal medicine 20e pg1918