Cord Oedema From Cystic Arachnoiditis
Subluxation at C1/2 in Rheumatoid Arthritis can occur in three directions.
Spinal arachnoiditis can have various appearances. One of the more severe forms, cystic arachnoiditis, can result in cord signal abnormality which can be very extensive. This post looks at why cord oedema develops in cystic arachnoiditis and its MRI appearance.
Image Above: Cystic changes and septation in the lumbar thecal sac. Normal distribution of nerve roots not seen.
Image Above: Subarachnoid cystic change with cord compression secondary to cystic arachnoiditis.
Image Above: Cystic arachnoiditis with cord oedema. Cystic subarachnoid change (blue arrows). Extensive cord oedema (yellow arrows) secondary to altered CSF flow and fluid accumulating in the cord.
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