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: Gynaecology & Obstetrics
Sentinel biopsy is MOST useful in? 
Select and explain. 
A. Cervix carcinoma, B. Vulval carcinoma, C. Vaginal carcinoma, D. Endometrial Carcinoma
B: Vulval carcinoma
Answer: B: Vulval carcinoma 
Explanation: Sentinel node is a lymph node that is first to receive drainage from a malignancy. Sentinel lymph node biopsy is used in breast carcinoma, melanoma, vulval carcinoma. Ref: Novak, 14th edition, page; 1425-1426