RT Journal Article
SR Electronic
T1 Images of the month 1: Trident sign and neurosarcoidosis
JF Clinical Medicine
JO Clin Med
FD Royal College of Physicians
SP e667
OP e668
DO 10.7861/clinmed.2021-0596
VO 21
IS 6
A1 Emily Gibbons
A1 Daniel Whittam
A1 Anu Jacob
A1 Saif Huda
YR 2021
UL http://www.rcpjournals.org/content/21/6/e667.abstract
AB A 36-year-old woman presented with a subacute, relapsing myelitis, manifesting as bilateral ascending lower limb paraesthesia, partially responsive to steroids. Imaging demonstrated a longitudinal spinal cord lesion, with a unique and characteristic sign (the ‘trident sign’) on axial views, which is specific to a diagnosis of neurosarcoidosis. This case highlights the importance of using this feature to distinguish a longitudinal cord lesion of sarcoidosis from other differentials.