- Patients with vulvar cancer who will undergo or have undergone definitive surgery for primary stage I-IV vulvar cancer who will or have received a radical vulvectomy or radical local excision with concurrent unilateral or bilateral inguinal or inguinal-femoral lymphadenectomy; patients who are going to receive multi-modality therapy (radiation +/-chemotherapy) after undergoing surgery are eligible; patients may undergo sentinel node mapping as long as it is followed by a full lymphadenectomy; (note: enrollment of vulvar patients was closed on June 9, 2014; no vulvar patients will be enrolled after closure of this arm)