A soft tissue sarcoma (STS) is a malignant tumor that starts in soft tissue such as muscle, deep skin tissues, cartilage, or fat. It often occurs as a lump in the arm, although it can happen anywhere.
The bicep is a muscle on the front of the upper arm. Tendons attach the bicep to the bones in the arm and help it function. A bicep tear refers to tendon damage, which can cause pain and affect ...