Leiomyosarcoma (LMS) is a type of soft tissue sarcoma. The information here should ideally be read with our general information about soft tissue sarcomas.
We hope this information answers your questions. If you have any further questions, you can ask your doctor or nurse at the hospital where you're having your treatment.
Sarcomas are rare types of cancer that develop in the supporting or connective tissues of the body. There are two main types, soft tissue sarcomas and bone sarcomas.
Soft tissue sarcomas can develop in muscle, fat, blood vessels, or any of the other tissues that support, surround and protect the organs of the body.
Bone sarcomas can develop in any of the bones of the body, but may also develop in the soft tissue near bones.
Soft tissue sarcomas are rare. Only about 3,300 new cases are diagnosed each year in the UK. There are several different types of soft tissue sarcoma.
Leiomyosarcomas are one of the more common types of sarcoma to develop in adults. They start from cells in a type of muscle tissue called smooth muscle.
Smooth muscles are involuntary muscles that we have no control over. They are found in the walls of muscular organs like the heart and stomach, as well as in the walls of blood vessels throughout the body. This means that leiomyosarcomas can start anywhere in the body. Common places are the walls of the womb (uterus), the trunk of the body, and the arms and legs.