Interlaminar Endoscopic Resection of Giant Hemorrhagic Ganglion Cyst of the Facet Joint at L1 to L2 Level
Bibliographic record
Abstract
Hemorrhagic facet cysts are a rare condition including both synovial and ganglion cysts. Here, the authors present the first-ever reported case of a hemorrhagic ganglion cyst of the facet joint at L1 to L2 causing cauda equina syndrome. In this report, a 72-year-old woman presented with symptoms of cauda equina syndrome requiring urgent surgical consideration. Magnetic resonance imaging and computed tomography showed an extradural mass at the L1 to L2 level. Due to the giant size of the cyst, there was severe compression of the thecal sac and nerve roots. The patient underwent interlaminar contralateral decompression and cystectomy using a uniportal endoscopic approach. The patient had a quick postoperative recovery, with postoperative magnetic resonance imaging of the lumbar spine showing recovery of the facet cyst with no sign of recurrence or stenosis. This case demonstrates the successful surgical technique of interlaminar endoscopic contralateral decompression combined with cystectomy, showing that a hemorrhagic ganglion cyst at the facet at L1 to L2 can be removed completely under endoscopic view.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".