Conditions such as arthritis, bone cancer, bone infection and bone trauma can cause dark spots to show during a bone scan, according to the Johns Hopkins Medicine Health Library. These spots typically occur in areas where cells rapidly multiply.Continue Reading
Drugs.com defines bone scans as tests that look for abnormal bone cell metabolism. The test involves the injection of a tracer. According to WebMD, it may take between two to five hours for the tracer to bind to the bones. After the wait period, the patient is asked to drink up to six glasses of water to flush out excess tracer. The patient then lies down on a table where a large camera slowly scans the bones.
WebMD explains that a normal scan shows the tracer evenly distributed throughout the bones. Dark spots, also known as hot spots, show where the tracer collects in the bone. This occurs in areas that are healing or have abnormal growth patterns.
Bone scans are just one of many tools a physician uses to diagnose an illness. Though bone scans may show abnormalities, explains Mayo Clinic, they do not show what causes the problems. According to WebMD, a physician also considers the symptoms and results of other tests, such as X-rays, before making a diagnosis.Learn more about Cancer
Symptoms of a jaw bone infection include redness or swelling, pus drainage from the jaw area, and pain in the jaw or mouth, according to Johns Hopkins Medicine. Patients with symptoms of a jaw infection should be treated immediately to keep serious health issues from developing.Full Answer >
The risks of a DEXA bone scan include potential inaccuracy, identification problems and the possibility that the scan may not be covered by insurance, according to the Mayo Clinic. The procedure is painless and similar to an x-ray, explains WebMD.Full Answer >
Individuals with bone cancer typically feel deep, aching pain in the bones of the pelvis, back, arms, legs or ribs that often starts off gradually and becomes more persistent as the cancer develops, according to Cancer Treatment Centers of America. Swelling or lumps may also accompany localized pain.Full Answer >
Also called sarcoma, bone cancer is a tumor that starts growing from the bone. Cancers that are spread from other parts to the bones are usually referred to secondary cancer.Full Answer >