女性外阴包括大阴唇、小阴唇、阴蒂、前庭、阴阜等部。组织结构主要是皮肤、皮下脂肪、以及皮肤的附属器——大汗腺;此外尚有勃起组织,吴非(Wolffian)氏管残余,圆韧带及其下降伴随之部分腹膜,偶而还有付乳组织;在灵长类动物,外阴皮肤又属性皮肤,受内分泌影响。由于组织复杂,部位特殊,此处肿瘤恶性度很大,是妇科肿瘤中较为顽固者,早在40年代末,外阴癌的五年生存率仅为15%, The female vulva includes the labia majora, labia minora, clitoris, vestibular, and haze. The tissue structure is mainly skin, subcutaneous fat, and the skin’s adnexa, the apocrine glands; in addition there are erectile tissue, remnants of the Wolffian tube, round ligament and part of the peritoneum that is accompanied by the fall, and occasionally the breast tissue. In primates, the skin of the vulva is also attributed to the skin and is affected by endocrine effects. Due to the complex tissue and special sites, the tumor here is very malignant and is a more intractable person in gynecologic cancer. As early as the end of the 40s, the five-year survival rate of vulvar cancer was only 15%.