Combined surgical and endovascular approach to treat a carotid cavernous fistula with associated brainstem venous congestion
Bibliographic record
Abstract
Endovascular embolization is the standard approach for management of carotid cavernous fistulas (CCFs) due to the ease of access and reduced level of risk associated with the procedure compared with open surgery. We present here a case of a CCF that eventually led to the development of brainstem venous congestion from perimedullary venous drainage. This fistula was not amenable to endovascular embolization due to lack of either ophthalmic vein or petrosal sinus drainage. Therefore, a craniotomy with direct puncture of the cavernous sinus was performed, followed by coil embolization to completely treat this fistula. This case demonstrates an uncommon progression of venous drainage to Cognard grade V, rare development of symptomatic brainstem venous congestion and a unique method to combine an open surgical approach with endovascular embolization to treat CCFs.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".