neurologic disorders
Brachial Plexus and Lumbosacral Plexus Disorders
Diagnosis of Plexus Disorders
Electromyography and nerve conduction studies Usually MRI or CT of the appropriate plexus Diagnosis of a plexus disorder is suggested by clinical findings. Electromyography and nerve conduction studies should be done to clarify the anatomic distribution (including possible nerve root involvement). MRI or CT of the appropriate plexus and adjacent spine is done to detect abnormalities such as tumors and hematomas. MRI or CT is indicated for all nontraumatic and traumatic plexopathies except typical cases of brachial neuritis. 