Pseudomeningocele Following Traumatic Brachial Plexus Injury: A Case Report

An injury to the brachial plexus can lead to the development of a pseudomeningocele, a buildup of cerebrospinal fluid (CSF) in the subarachnoid space caused by tears in the affected root sleeves. External forces acting on the brachial plexus represent the main mechanism of injury. The resulting stretching and tearing of the meninges outside the nerve root led to the pseudomeningocele. Although often initially asymptomatic, a pseudomeningocele can eventually cause pain, paresthesia, muscle weakness, and paralysis. The nerve conduction studies (NCS), electromyography (EMG), and magnetic resonance imaging (MRI) can be used to identify the injury, and treatment can involve either conservative management or surgical intervention if necessary.