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: Psychiatry
A patient has a fear that his penis will retract into abdomen and  that may result in his death. Diagnosis 
Select and explain. 
A. Koro, B. Latah, C. Dhat syndrome, D. Cotard syndrome
A: Koro
Answer: A: Koro 
Explanation: It is a culture bound delusional disorder where a person believes his sex organs retract, disappear & lead to death.