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.

Soft tissue sarcomas are cancers that develop in your body’s soft tissues like muscle, fat, tendons, or cartilage. Your legs are the most common place they develop. The American Cancer Society ...

Deep sock marks on your legs might signal more than just tight clothing. Doctors warn that persistent indentations, ...