1naresh
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Orbital Involvement n =31 Spine Involvement n = 11 Unilateral 6/31 (19.4) Long segment 4/11 (36.4) Bilateral 25/31 (80.6) Short segment 6/11 (54.5) Segments involved Cauda equina enhancement 1/11 (9.1) Orbital 24/31 (77.4) Focality Intracanalicular 20/31 (64.5) Unifocal 3/11 (27.3) Prechiasmatic 17/31 (54.8) Multifocal 8/11 (72.7) Optic chiasm 5/31 (16.1) Location Optic tract 4/31 (12.9) Cervical 8/11 (72.7) Optic nerve enhancementa 25/29 (86.2) Thoracic 6/11 (54.5) Perineural enhancementb 17/25 (68) Conus 5/11 (45.4) Optic nerve low diffusivityc 10/15 (66.7) Cauda equina 1/11 (9) Pattern Central 6/11 (54.5) Peripheral 4/11 (36.4) Entire cross-section 3/11 (27.3) Central gray only 4/11 (36.4) Enhancement None 7/11 (63.6) Intramedullary 3/11 (27.3) Leptomeningeal 1/11 (9) Cord expansion 5/11 (45.4)
aUnknown in 2 patients due to absence of contrast.
bUnknown in 6 patients due to absence of contrast and/or fat saturation.
cUnknown in 16 patients due to missing DWI sequence.