This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological oncology, Subject name: Gynaecology & Obstetrics
All of the following statements hold true for melanoma of vulva except : 
Select and explain. 
A. It is the 2nd most common vulval cancer, B. M/C site is labia majora, C. May arise from junctional nevus, D. Has a poor prognosis
B: M/C site is labia majora
Answer: B: M/C site is labia majora 
Explanation: Melanoma of vulva accounts for 3-5% of all vulval tumors It may arise de novo,but some arise from a pre-existing juctional naevus. occur frequently on clitoris or labia minora have poor prognosis Reference : textbook of gynaecology Sheila balakrishnan, 2nd edition, pg no: 292,293