mri cystic arachnoiditis cord compression oedema radiology education asia

MRI CORD OEDEMA FROM CYSTIC ARACHNOIDITIS

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.

 

PATHOLOGY
  • Normally there is two way flow of CSF between the central canal/ cord and the subarachnoid space and vice versa. Overall net flow is into the cord.
  • Arachnoiditis  can result in septations, intra dural arachnoid cyst formation and tethering of the cord.
  • Cord tethering and septations can result in abnormal CSF flow dynamics with net increase in fluid and interstitial pressure in the cord which can lead to syrinx formation, cord oedema or both.
  • Cord oedema and syrinx formation may begin at the level of the septation or cyst but can be extend quite distant to them.

 

MRI FINDINGS:

cystic arachnoiditis mri radiology education asia

Image Above: Cystic changes and septation in the lumbar thecal sac. Normal distribution of nerve roots not seen.

cystic arachnoiditis cord compression mri radiology education asia

Image Above: Subarachnoid cystic change with cord compression secondary to cystic arachnoiditis.

cystic arachnoiditis cord compression oedema mri radiology education asia

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.

 

RELATED POSTS THAT INCREASE YOUR DEPTH OF KNOWLEDGE ON THIS TOPIC. Click on the images below:

mri spine rheumatoid arthritis basilar invagination radiology education asia

mri spine normal position conus tethered radiology education asia radedasia

hirayamas disease mri radiology education asia

CONTINUE YOUR LEARNING WITH ONLINE RADIOLOGY COURSES. Click on the image below:

online radiology conference course mri fellowship

What’s the Purpose of the Tuesday Tips? Many of the Tuesday Tip posts arise from questions or difficulties that people bring up in the Mini Fellowships. These posts are meant to be short and concise to answer those questions.

 

#radedasia

This site is intended for Medical Professionals only. Use of this site is governed by our Terms of Service and Privacy Statement which can be found by clicking on the links. Please accept before proceeding to the website.
error: Right Click not available.