Delayed diagnosis of traumatic gunshot wound Brown-Sequard-plus syndrome due to associated brachial plexopathy

Brown-Séquard Syndrome (BSS) is one of the rarest incomplete spinal cord syndromes. The combination of injuries to peripheral nerves and the central nervous system result in an array of symptoms that can result in overlapping clinical presentations and delayed diagnosis. Early detection of spinal cord injury in patients with peripheral nerve injury has been observed to have a positive effect on outcomes.

This report discusses the case of a 29-year-old male patient with Brown-Sequard-Plus Syndrome (BSPS) and Brachial Plexopathy (BP) secondary to gunshot wound in the left inferior neck. The patient was found initially with left hemibody weakness. A chest CT Scan demonstrated a fracture of the left T2 transverse process. Imaging studies of the spinal cord were not performed in the acute setting. Evaluation in an outpatient setting 3 weeks later showed significant left upper extremity weakness with improvement of left lower extremity strength. Also present were loss of pain and temperature sensation on the right side below the T2 dermatome level. A cervico-thoracic MRI was requested and revealed a T2 level spinal cord contusion. Electrodiagnostic studies confirmed a lower trunk left BP.

The patient was diagnosed with BSPS and associated left lower trunk BP. To our knowledge, this is the first reported case of a concomitant BSPS and BP secondary to a gunshot wound. Delayed diagnosis of BSPS may occur in a trauma setting underlying the importance of a detailed history and physical examination for favorable outcomes.