MedGen

A malignant soft tissue tumor which develops from cells of striated muscle. It is the most common form of tumor found in children and adolescents. [from ORDO]

A malignant neoplasm that occurs during childhood. Representative examples include acute leukemias, malignant brain neoplasms, and sarcomas. [from NCI]

A connective tissue neoplasm formed by proliferation of mesodermal cells. Bone and soft tissue sarcomas are the main types of sarcoma. Sarcoma is usually highly malignant. [from HPO]

Epithelioid sarcoma is a rare, soft tissue tumor characterized by high incidence of local recurrence, regional lymph node involvement and distant metastases. It commonly affects the soft tissue under the skin of a finger, hand, forearm, lower leg or foot, less often other areas of the body. [from ORDO]

A benign, well circumscribed soft tissue neoplasm characterized by the presence of spindle shaped myofibroblasts and mast cells in a collagenous stroma. [from NCI]

A benign, intermediate, or malignant neoplasm that affects the connective and soft tissue. [from NCI]

A granular cell tumor characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential. [from NCI]

A malignant neoplasm affecting the skeletal or smooth muscles. Malignant neoplasms arising from the skeletal muscles are called rhabdomyosarcomas. Malignant neoplasms arising from the smooth muscles are called leiomyosarcomas. [from NCI]