Leiomyoma: A benign tumor derived from smooth muscle tissue, also known as a fibroid tumor. They rarely occur outside of the UTERUS and the GASTROINTESTINAL TRACT but can occur in the SKIN and SUBCUTANEOUS TISSUE, probably arising from the smooth muscle of small blood vessels in these tissues.Uterine Neoplasms: Tumors or cancer of the UTERUS.Myometrium: The smooth muscle coat of the uterus, which forms the main mass of the organ.Leiomyoma, Epithelioid: A relatively rare smooth muscle tumor found most frequently in the wall of the gastrointestinal tract, especially in the stomach. It is similar to other smooth muscle tumors but may become very large and hemorrhage and exhibit small cystic areas. Simple excision is almost always curative. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1354)Leiomyomatosis: The state of having multiple leiomyomas throughout the body. (Stedman, 25th ed)Angiomyoma: A benign tumor consisting of vascular and smooth muscle elements.Uterine Myomectomy: Surgical removal of a LEIOMYOMA of the UTERUS.Leiomyosarcoma: A sarcoma containing large spindle cells of smooth muscle. Although it rarely occurs in soft tissue, it is common in the viscera. It is the most common soft tissue sarcoma of the gastrointestinal tract and uterus. The median age of patients is 60 years. (From Dorland, 27th ed; Holland et al., Cancer Medicine, 3d ed, p1865)Hysterectomy: Excision of the uterus.Smooth Muscle Tumor: A tumor composed of smooth muscle tissue, as opposed to leiomyoma, a tumor derived from smooth muscle.Norpregnadienes: Pregnadienes which have undergone ring contractions or are lacking carbon-18 or carbon-19.Uterine Artery Embolization: The use of embolizing agents to block the arterial blood supply to parts or all of the UTERUS. The procedures are done to control bleeding or to cause destruction of uterine tissues.Menorrhagia: Excessive uterine bleeding during MENSTRUATION.Food, Preserved: Food that has been prepared and stored in a way to prevent spoilage.Transforming Growth Factor beta3: A TGF-beta subtype that plays role in regulating epithelial-mesenchymal interaction during embryonic development. It is synthesized as a precursor molecule that is cleaved to form mature TGF-beta3 and TGF-beta3 latency-associated peptide. The association of the cleavage products results in the formation a latent protein which must be activated to bind its receptor.Selenium-Binding Proteins: A group of proteins that covalently attach to selenium or SELENIUM-containing compounds.