27th June 2023

A 56-year-old woman with a background of rheumatoid arthritis presents with numbness in her left hand

A 56-year-old woman with a background of rheumatoid arthritis presents with numbness in her left hand with sensory loss over the radial half of the hand and wasting of muscle over thenar eminence and left foot drop.

Select the SINGLE most appropriate cause of her findings. Select ONE option only.