Erb's palsy. The study is limited, especially axial fat saturated T2 weighted images for technical reasons. The avulsion of the right C8 nerve root from the spinal cord with retraction has not changed and there is persistence of the increased T2 signal in the right C7-T1 neural foramen, reflecting an associated small pseudomeningocele which abuts the thecal sac. The right T1 nerve root shows minimally increased T2 signal and is also slightly less distinct than the contralateral T1 nerve root, with slight asymmetric prominence of the right T1 nerve root sleeve. There is no other definite abnormality of the right brachial plexus. There is no mass. The cervical spinal cord shows no abnormality.The right humeral head is posteriorly subluxed relative to the glenoid. However, this study is not optimized for shoulder assessment and this may relate to positioning.
1. Avulsion and retraction of the right C8 nerve root with associated small pseudomeningocele, as on the previous examination from January 2015. Please correlate with Klumpke palsy.2. Subtle abnormality of the right T1 nerve root and sleeve may represent partial injury as well. 3. There is suggestion of posterior right glenohumeral subluxation. However, this study is not optimized for shoulder assessment. If there is clinical concern for glenohumeral derangement, dedicated shoulder MRI would be helpful.