Brachial Plexus Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A benign or malignant (primary or metastatic) neoplasm that affects the brachial plexus. The most common benign neoplasms that arise from the brachial plexus are schwannoma and neurofibroma. The most common primary malignant neoplasm of the brachial plexus is malignant peripheral nerve sheath tumor. Metastatic malignant neoplasms that affect the brachial plexus most commonly originate from the lung or breast. Patients may present with a palpable mass and sensory and/or motor deficits or may be asymptomatic.

**Synonyms:** - Brachial Plexus Neoplasms - Brachial Plexus Tumor - Neoplasm of Brachial Plexus - Neoplasm of the Brachial Plexus - Tumor of Brachial Plexus - Tumor of the Brachial Plexus