MALIGNANCY. Low back pain at night that is not relieved by lying down may be caused by a tumor in the cauda equina (the roots of the spinal nerves controlling sensation in and movement of the legs), or a cancer that has spread to the spine from the prostate, breasts, or lungs. The pain is caused by irritation of a nerve root. 2  Sciatica is an example of radicular pain. 3  Referred. 4  The pain is perceived in the lower back but is caused by inflammation elsewhereâoften in the kidneys or lower abdomen.
Skin Cancer Symptoms and Signs. BCC is the most common type of skin cancer and has a predilection for sun-exposed skin. Tumors may appear as a pearly or waxy bumps usually with visible blood vessels (nodular BCC), or as a flat scaly reddish patch (superficial BCC) with a brown border, or as a hard or scar-like lesion (sclerosing BCC).
Skin Cancer. With over 1 million new cases each year, skin cancer is the most common form of human cancer. There are three types of skin cancer: basal cell carcinoma, squamous cell carcinoma, and melanoma. Read about the symptoms, diagnosis, and treatment of nonmelanoma skin cancer.