<prompt> Sentinel biopsy is MOST useful in?Cervix carcinomaVulval carcinomaVaginal carcinomaEndometrial Carcinoma  <response>: 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 