Squamous cell carcinoma or SCC is a type of skin cancer that arises in the outer layer of the skin called the epidermis. Like other skin cancers, it is associated with ultraviolet radiation and sunlight exposure. Other factors which increase the risk of developing SCC include a suppressed immune system and having lesions such as chronic unhealing wounds or actinic keratosis.
SCC is the second commonest form of skin cancer and its incidence is increasing. It is possible for SCCs to spread to lymph nodes via the lymphatic system and if this occurs then a lymphadenectomy or lymph node clearance may be required.
Some useful information and guidelines for the management of squamous cell skin cancer can be found here :
Guidelines for the management of patients with squamous cell carcinoma of the skin