Lymphovascular Supply

The internal pudendal artery gives off a branch which provides part of the blood supply to the vulva, which is also contributed to by branches from the femoral artery. The venous drainage follows the arterial blood supply.

The lymphatic drainage of each side of the vulva is largely to the ipsilateral inguinal and femoral lymph nodes although some contralateral drainage occurs. Most of the lymphatic drainage is to

the superficial inguinal lymph nodes and therefore these are usually the first lymph nodes involved by metastatic tumour in vulval carcinoma. The lymphatic drainage from the clitoris and the midline perineal area is bilateral.

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