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.
Because ultraviolet A is weaker than ultraviolet B, scientists long blamed ultraviolet B as the sole culprit in causing skin cancer in persons with a history of sunburn and repeated overexposure to ultraviolet radiation. Recent research, however, has also implicated ultraviolet A as a possible cause of skin cancer. Ultraviolet B rays are more likely than ultraviolet A rays to cause sunburn, but ultraviolet A passes further into the skin. Scientists have long thought that ultraviolet B can cause melanoma and other types of skin cancer. They now think that ultraviolet A may add to skin damage that can lead to cancer.