Kaposi sarcoma is a type of cancer that develops from cells lining blood and lymphatic vessels. It can appear as lesions or tumors on the skin and inside the mouth, but it may also develop in other parts of the body. Kaposi sarcoma can affect soft tissues and organs such as the gastrointestinal tract, lungs and lymph nodes. It is…

Kidney cancer develops when cells in the kidney begin to grow abnormally and form a mass or tumor. It can affect one kidney and, less commonly, both kidneys. A kidney mass may be benign (non-cancerous) or malignant (cancerous), so appropriate medical evaluation is important whenever an abnormal growth is detected. Kidney cancer may not cause noticeable symptoms in its early…

Knee pain is discomfort or pain in or around the knee joint. It can develop suddenly after an injury or gradually because of overuse, arthritis, inflammation or other conditions. Knee pain is common in adults and may affect everyday activities such as walking, standing, bending, climbing stairs or exercising. Athletes and people involved in running, jumping or sports that require…