Hearing a diagnosis of "cancer" is very difficult to understand. There are three main types of skin cancer: basal cell carcinoma, squamous cell carcinoma and melanoma. The most probable cause of skin cancer is sun exposure, however, genetics, tanning beds, immunosuppression, chemicals, chronic wounds and ulcers are some of the other causes.
Once a patient is diagnosed with a skin cancer generally it needs to be removed with surgery. After being removed there can be a hole where the cancer was excised and this would require reconstruction to fill the hole. The goal of the reconstruction is to make a natural, aesthetically pleasing scar and to camouflage any asymmetries that may be present because of the skin cancer excision.