When colon cancer is detected in its early stages, it may not have even caused symptoms. Symptoms can also vary according to the specific location within the colon where the tumor is located. Some symptoms and signs of colon cancer are: rectal bleeding or blood in the stool, dark-colored stool, change in bowel habits, change in stool consistency,
Most skin cancers are caused by exposure to the sun. There are 2 main types of non melanoma skin cancer, basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). A history of sunburn increases the risk of BCC.Risk is especially high if you had several episodes of sunburn in childhood.here are 2 main types of non melanoma skin cancer Ì¶Ì¶ basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). A history of sunburn or recreational exposure to sunlight increases the risk of BCC.
1 They can damage skin cellsâ DNA directly, and are the main rays that cause sunburns. 2  They are also thought to cause most skin cancers. 3  UVC rays have more energy than the other types of UV rays, but they donât get through our atmosphere and are not in sunlight. 4  They are not normally a cause of skin cancer.