Headache & Pain
Primary stabbing headache
Feb. 15, 2022
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(Left) Proton density cross-section of thoracolumbar junction with suggestive increased signal intensity in central cord. (Right) T2-weighted image showing increased signal in central cord, surrounded by rim of normal signal, in turn surrounded by CSF (compare to multiple sclerosis). (Contributed by D. Huddle, University of Chicago.)