label: Mediastinal Soft Tissue Neoplasm
label_lc: mediastinal soft tissue neoplasm
description: A benign or malignant mesenchymal neoplasm that arises from the mediastinum. Representative examples of benign mediastinal mesenchymal neoplasms include chondromas, leiomyomas, lipomas, and rhabdomyomas. Representative examples of malignant mediastinal mesenchymal neoplasms include angiosarcomas, leiomyosarcomas, liposarcomas, osteosarcomas, rhabdomyosarcomas, and synovial sarcomas.