article_snippet.sent: Leiomyosarcomas are cancers that develop in a type of muscle tissue called smooth muscle.
article_snippet.sent: People with early leiomyosarcoma often have no symptoms.
article_snippet.sent: symptoms to develop as the cancer advances include a lump or swelling, .
article_snippet.sent: Source: Macmillan Cancer Support .
article_snippet.sent: A leiomyosarcoma is a cancer of the soft tissue, the muscle, fat, blood vessels, or any of the other tissues that support, surround and protect the organs of the bodythe body.
article_snippet.sent: Only about 3,300 new cases of soft tissue cancers are diagnosed each year in the UK, and Only about 3,300 new cases of soft tissue cancers mainly affect people over the age of 50.