Canadian Medical Guide > Diseases > Neoplasms > Neoplasms by Histologic Type > Neoplasms, Connective and Soft Tissue > Neoplasms, Muscle Tissue Terms and Definitions

Neoplasms, Muscle Tissue

Medical Definition:	Neoplasms composed of muscle tissue: skeletal, cardiac, or smooth. The concept does not refer to neoplasms located in muscles.
Guide Notes:	neoplasms composed of muscle tissue, NOT neoplasms located in muscles: TN 135; /blood supply /chem /secret /second /ultrastruct permitted; coord IM with precoord organ/neopl term (IM); restricted use: Manual 24.2.2.5; DF: NEOPL MUSCLE TISSUE
Also Called:	Myoblastoma,Myofibroblastoma

Neoplasms, Muscle Tissue Categories.

	Granular Cell Tumor - Unusual tumor affecting any site of the body, but most often encountered in the head and neck. Considerable debate has surrounded the histogenesis of this neoplasm; however, it is considered to be a myoblastoma of, usually, a benign nature. It affects women more often than men. When it develops beneath the epidermis or mucous membrane, it can lead to proliferation of the squamous cells and mimic squamous cell carcinoma.
	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 tissues, probably arising from the smooth muscle of small blood vessels in these tissues.
	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)
	Myoma - A benign neoplasm of muscular tissue. (Stedman, 25th ed)
	Myosarcoma - A general term for a malignant neoplasm derived from muscular tissue. (Stedman, 25th ed)
	Sarcoma, Alveolar Soft Part - A variety of sarcoma having a reticulated fibrous stroma enclosing groups of sarcoma cells, which resemble epithelial cells and are enclosed in alveoli walled with connective tissue. It is a rare tumor, usually occurring between 15 and 35 years of age. It appears in the muscles of the extremities in adults and most commonly in the head and neck region of children. Though slow-growing, it commonly metastasizes to the lungs, brain, bones, and lymph nodes. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1365)
	Smooth Muscle Tumor - A tumor composed of smooth muscle tissue, as opposed to leiomyoma, a tumor derived from smooth muscle.

Neoplasms, Muscle Tissue Medical Definitions and Terms

CANADIAN MEDICAL GUIDE

Thank you for visiting Canadian Medical Guide .com

Wildlife On Video »

Canada's Great Outdoors
Tour Canadian Rockies »
Book Banff »
Book Jasper »
Maligne Lake Boat Cruise »
Gondola Banff »
Hike Jasper »
Jasper Columbia Icefield »