Mediastinal Soft Tissue Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** 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.

**Synonyms:** - Mediastinal Soft Tissue Tumor - Soft Tissue Neoplasm of Mediastinum - Soft Tissue Neoplasm of the Mediastinum - Soft Tissue Tumor of Mediastinum - Soft Tissue Tumor of the Mediastinum