Ruptured Infantile Meningeal Cerebral Arteriovenous Fistula Mimicking Shaken Baby Syndrome
Bibliographic record
Abstract
This previously healthy 6-month-old boy presented with sudden collapse under the care of his mother while feeding. Despite immediate resuscitation, the infant suffered a prolonged period of hypoxic-ischemic injury. Upon admission to the hospital, a CT head scan revealed a large, mixed-density left frontal subdural hemorrhage causing significant mass effect, as well as features of global hypoxic-ischemic injury. Fundoscopic examination revealed bilateral retinal hemorrhages that were "too numerous to count." Since the articulated clinical history was not deemed to account for the boy's condition, a diagnosis of "abusive head trauma" was suspected, and the parents were removed from the custody of the boy's living twin. Prognosis was considered poor, resulting in care being withdrawn. The infant succumbed 2 days following presentation. Autopsy revealed a large, ruptured, left frontal meningeal arteriovenous fistula. In contrast to the fundoscopic impression, autopsy examination revealed only mild retinal hemorrhage limited to the posterior poles of the globes, suggesting an etiology attributable to raised intracranial pressure. Upon issuance of the autopsy report, the parents regained custody of the second twin. This case adds to the extensive literature arguing against the contention that the so-called "triad" (ie, subdural hemorrhage, retinal hemorrhage, and encephalopathy) is pathognomonic for shaken baby syndrome.
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.003 |
| 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".