A necrotic tumor is a tumor that has one or more areas of dead tissue, usually related to growth beyond the tumor's blood supply, says the Free Dictionary. Some researchers believe portions of tumors turn necrotic when they're deprived of oxygen, notes Japanese Journal of Clinical Oncology.Continue Reading
Necrosis refers to the death of cells, and until recently, it was thought to be an unregulated occurrence during which the cell membrane is destroyed, says National Center for Biotechnology Information. New data shows that it may actually be a well-regulated process activated by particular stimuli. Unlike another type of cell death called apoptosis, necrosis usually causes inflammation that may be involved in tumor regression in patients undergoing anticancer therapy. However, when a tumor is developing, excessive necrosis results in more aggressive tumors because the inflammation caused by necrosis can stimulate their growth.
Carcinoma patients with some types of tumor necrosis are more likely to experience less favorable outcomes, including recurrence of disease, explains Japanese Journal of Clinical Oncology. In a study of patients with urinary tract carcinomas, researchers found that necrosis tended to be more common in larger tumors. The presence of necrosis in a tumor may provide doctors with a tool for predicting how aggressively the tumor is growing.Learn more about Cancer
A pituitary tumor can cause growth problems if the tumor is an adenoma that secretes growth hormone, according to the American Cancer Society. A child with one of these tumors is unusually tall and grows very quickly. He may also suffer from joint pain and hyperhydrosis.Full Answer >
Mesothelioma cancer, also known as malignant mesothelioma, is a cancer that starts as a tumor in the mesothelium, which is a protective tissue lining that covers certain areas in the body, according to the American Cancer Society. There is a significant link between mesothelioma cancer and asbestos exposure.Full Answer >
Skin cancers, whether on the scalp or other areas, may appear to be a growth or sore that does not heal for more than a few weeks, according to the American Academy of Dermatology. Skin cancers may also look like lumps, spots, moles or freckles that change in color or size. Skin cancers can look like any unexplainable change on the skin.Full Answer >
According to the Department of Radiology at the University of Washington, sclerotic bone lesions are areas of bone that exhibit extra bone growth. One of the most common causes for diffuse sclerotic lesions is metastatic cancer.Full Answer >