Vulvar cancer, due to its superficial location, does not require an ultrasound for detection. Vulvar cancer is a malignant tumor of the vulva, with primary squamous epithelium being the most common type. The main clinical manifestations are vulvar nodules, often accompanied by pain and significant itching. Local necrosis or infection can occur, and the lesions of vulvar cancer can be directly observed with the naked eye. However, ultrasound examination is also widely used in vulvar cancer, not for detecting the cancer itself, but for examining whether there is enlargement of the lymph nodes in the groin, abdomen, and pelvic regions, suspecting invasion by cancer cells.