Glossary of Cancer Terms

   
Kaposi's Sarcoma Consists of characteristic skin lesions: flat to raised purple plaques. They are tumors that have a rich network of small blood vessels. There are several types of KS based on cause rather than appearance. A rare form the "classic" type KS is found predominantly in Mediterranean males and often also in males of Ashkenazic origin (mid-European Jews). Another type is KS found to be common result of altered body immunity, such as with AIDS (Acquired Immune Deficiency Syndrome). Or through direct depression of the immune system, for example in organ transplant patients taking immunosuppressive drugs. KS is not considered curable in any stage by current treatment, however, long-term survival does occur both with and without treatment.

Keloid

Scar formation in the skin following trauma or surgical incision. The tissue response is out of proportion to the amount of scar tissue needed for normal repair and healing. The result is a raised, firm, thickened red scar which may grow for a prolonged period of time.

Kidney Cancer Also called renal cell cancer, and arises from the outer portion of the kidney called the parenchyma. The parenchyma is made up of many single units called nephrons that filter water and toxic products from the blood. Kidney cancer accounts for about 3 percent of new cancers in the United States.
Kidneys A pair of organs located at the back of the abdominal cavity, one on each side of the spinal column. Their function is to excrete urine and to help regulate the water, electrolyte, and acid-base content of the blood.

Krukenberg tumor

A malignant tumor of the ovary. Usually affecting both ovaries and frequently secondary to malignancy of the gastrointestinal tract.

 

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