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
Right-sided vocal cord palsy seen in - 
Select and explain. 
A. Larynx carcinoma, B. Aortic aneurysm, C. Mediastinal lymphadenopathy, D. Vocal nodule
A: Larynx carcinoma
Answer: A: Larynx carcinoma 
Explanation: First I would like to exclude other three options : -


Aortic aneurysm (option b) and mediastinal lymphadenopathy (option c) cause left sided vocal cord paralysis.
Vocal nodules does not cause vocal cord paralysis. 


Now we are left with option 'a' only : -

"Laryngeal carcinoma especially glottic can cause unilateral or bilateral vocal cord paralysis" ─ Conn's current therapy

So, answer of this question is laryngeal carcinoma as it can cause unilateral (right or left) or bilateral vocal cord paralysis.