On a radiology rotation, you are given a cervical spine x-ray film of a 35-year-old man. You can detect only mild congenital narrowing of the cervical spinal canal. The only clinical information...

On a radiology rotation, you are given a cervical spine x-ray film of a 35-year-old man. You can detect only mild congenital narrowing of the cervical spinal canal. The only clinical information available is that the patient has been experiencing neck pain worsened by movement, radiating along the left arm to “some of his fingers.” Triceps reflex is reduced on the left. What is the most likely diagnosis?

A. Radial nerve injury

B. C7 radiculopathy

C. Musculocutaneous nerve injury

D. C6 radiculopathy

E. Cervical cord compression