Mothball ingestion Causing Toxic Leukoencephalopathy
Bibliographic record
Abstract
Introduction : Toxic leukoencephalopathy is rare and characterized by progressive damage to white matter in the brain. Exposure to drugs of abuse, environmental toxins, or other agents leads to demyelination. The exact mechanism and underlying pathophysiology of toxic leukoencephalopathy remains unknown and is thought to vary depending upon source of toxicity. Our case involves a 44-year-old woman who presented to the emergency room with altered mental status, new onset seizures, difficulty walking, and hypotonia. During her hospital stay she remained in bed, unable to ambulate and minimally responsive. Her cognitive function declined, and she rapidly became nonverbal. A history of placing mothballs (paradichlorobenzene) in her room/pillow, and possible consumption was received. The patient never regained mental acuity and was transferred to a long-term care facility. Six months later she was readmitted to hospital for sepsis and died. Methods : To elucidate the cause of her altered mental status, computed tomography (CT) scan, magnetic resonance imaging (MRI), bacterial/viral culture, urine paradichlorobenzene, and ultimately an autopsy were performed.’ Results: The patient’s initial CT scan, MRI, and viral and bacteriology testing were negative and unremarkable. After eliciting history of mothball exposure, urine testing revealed elevated levels of paradichlorobenzene (>50 mg/kg toxic exposure level). A second MRI was performed 3 weeks after admission. This revealed confluent supratentorial periventricular and subcortical white matter hypointensity consistent with diagnosis of diffuse leukoencephalopathy, favoring toxic etiology. At autopsy, neuropathological examination showed gliosis and extensive infiltration of the white matter with macrophages in the cerebrum, brainstem, and cerebellum. There was attenuation of myelin and axons and focally disrupted axons. Section of the left basal ganglia showed microscopic organizing infarcts in the internal capsule with gliosis and macrophages. Conclusions: Paradichlorobenzene is an aromatic hydrocarbon that is fat soluble and toxic to the central nervous system. In this case, exposure to toxic levels caused toxic-necrotizing leukoencephalopathy.
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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 | 0.001 | 0.002 |
| 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 | 0.001 |
| 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".