A “Mismatched” connection: a rare case of indirect or dural carotid-cavernous fistula: a case based review
Bibliographic record
Abstract
Introduction and importance: A carotid-cavernous sinus fistula is an abnormal connection between the internal or external carotid artery and the venous system of the cavernous sinus. It represents a rare entity, and it is often misdiagnosed due to its overlapping symptoms with other conditions such as cavernous sinus thrombosis or orbital inflammation. Cerebral angiography continues to be the gold standard for diagnosis and surgical planning in patients with CCF, and the endovascular trans-venous approach still represents the primary line of treatment. Trans-arterial technique has become an excellent treatment option since the advent of embolic agents. Case presentation: Here, the authors report the case of a 42-year-old male with a one-week history of impaired visual acuity, bilateral eye edema, eye redness, and ophthalmoplegia. A neuro-ophthalmological examination found proptosis, conjunctival chemosis, and sclera injection. Examination using MR venography and digital subtraction angiography (DSA) revealed an abnormal connection between the meningeal branch of the ICA, the ECA, and the cavernous sinus. The patient received endovascular treatment with Onyx injection into the facial vein with thrombosis of the anterior cavernous sinus. The patient presented an uneventful postoperative period and was symptoms-free on postoperative day 1. Clinical discussion: CCF are rare and challenging conditions that require a multidisciplinary approach. Conclusion: The endovascular treatment represents the gold standard and usually allows an effective interruption of the abnormal vascular connection with an almost immediate resolution of the preoperative signs and symptoms.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.005 | 0.004 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".