Presentation
Left sided back pain
Patient Data
Grade I anterolisthesis of L4 over L5 vertebra body is seen with possible bilateral spondylolysis. Concentric bulge, annular tear of L4-5 disc is seen with ligamentum flavum thickening and facetal arthropathy. Cystic lesion measuring approx. 7 x 10 mm is seen at anteromedial aspect of left L4-5 facet joint, protruding into the spinal canal. This along with L4-5 disc is causing severe compression of the central canal, left traversing L5 nerve root , left lateral recess and mild compression of bilateral neural foramina.
Arrows pointing towards the cyst.
Case Discussion
Synovial facetal cyst at L4-5 level with other degenerative spondylotic changes responsible for patient's complaints. Fatsat MR sequences are not available, but would have been useful in delineating the synovial cyst better.
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