Myosarcoma is a malignant muscle tumor. [1] People with myosarcoma often wake up with the feeling as if they had a cramp during their sleep. [2] Leiomyosarcoma is sarcoma of smooth muscle, and rhabdomyosarcoma is sarcoma of striated muscle. However, the term myosarcoma itself still appears in the literature. [2]

Myosarcoma is categorized as one of the four major types of cancer and is defined as a sarcoma or cancer of the muscle tissue; it is a malignant tumor derived from myogenic cells. Myosarcoma can occur in the prostate and bladder, and the small and large intestines.

2023年12月20日 · Rhabdomyosarcoma is a rare type of cancer that starts as a growth of cells in soft tissue. Soft tissues support and connect organs and other parts of the body. Rhabdomyosarcoma most often starts in muscle tissue. Although rhabdomyosarcoma can start anywhere in the body, it's more likely to start in the: Head and neck area.

2025年1月22日 · Signs and symptoms of sarcoma include: A lump that can be felt through the skin that may or may not be painful. Bone pain. A bone that breaks with no clear cause, such as with a minor injury or no injury. Belly pain. Weight loss. Make an appointment with a doctor or other healthcare professional for symptoms that worry you.

2024年12月31日 · Leiomyosarcoma is a rare cancer that begins in smooth muscle tissue. Many areas of the body have smooth muscle tissue. Areas with smooth muscle tissue include the digestive system, urinary system, blood vessels and uterus. Leiomyosarcoma most often starts in the smooth muscle tissue in the uterus, belly or leg. It starts as a growth of cells.

2022年1月24日 · Leiomyosarcoma is a rare soft tissue cancer that is believed to originate in the body’s smooth muscles, such as the uterus, intestines, stomach, bladder and blood vessels.

Soft tissue sarcoma is usually classified based on where in the body the cancer started: If sarcoma starts in smooth muscle, it is called leiomyosarcoma. Gastrointestinal tract sarcoma is called a gastrointestinal stromal tumor. Soft tissue sarcoma in fatty tissue (also called adipose tissue) is called liposarcoma.

Leiomyosarcomas are most commonly found in the retroperitoneum in adults. They uncommonly occur in the deep soft tissues of the extremities but may be seen in more superficial sites, particularly in the dermis and subcutis.

2024年1月12日 · Rhabdomyosarcoma is a rare soft tissue cancer that typically affects children and teenagers but can also affect adults. You can develop rhabdomyosarcoma anywhere in your body, but it usually affects muscles in your arms, legs, head and neck, and abdomen (belly).

Cellular inflammatory pseudotumor in young individuals: a lesion distinguishable from fibrous histiocytoma or myosarcoma? Lab Invest.