Vulvar cancer refers to abnormal, cancerous growth of cells in the external female genitalia. It typically occurs in postmenopausal women and signs may include lumps, sores, bleeding or discharge in the vulvar area. Risk factors include HPV infection, smoking, HIV and other conditions. Diagnosis involves biopsy of any suspicious lesions. Treatment depends on the stage but may include surgery to remove cancer and nearby lymph nodes, radiation therapy, chemotherapy and follow-up exams.