This will not be offered routinely to any patients as there is no evidence that patients lived longer after having this procedure. There will be some circumstances where your doctor still feels that this is the best treatment option for you and the advantages and disadvantages of this will be discussed with you.
If the melanoma has been found to be in the sentinel, a completion dissection is a further operation to remove the other nodes in the same area, in case they are also cancerous. A similar operation may be carried out if at some time you develop a lump in one of your lymph nodes that can be felt and the node is shown to be involved with melanoma. This operation is usually carried out under general anaesthetic.
removal is a major surgical procedure, but the impact varies according to which lymph nodes are removed. After the operation, you may experience pain, swelling and bruising of the area operated on, and some numbness, stiffness and reduced movement. These would usually be temporary. Possible complications include infection and a build-up of fluid in the area of the operation. You will remain at an increased risk of for the rest of your life. The majority of people experience some degree of and for many this requires control of the through elastic sleeves or stockings, exercise and massage.
More information on here.removal (also known as clearance or lymphadenectomy) can be found