Teaching Neuro <i>Images</i> : Perineural spread of basal cell carcinoma along the trigeminal nerve
Bibliographic record
Abstract
A 72-year-old man presented with painless left cheek and upper lip paresthesias for 1 year.A basal cell carcinoma had been resected from the left lower lid 2 years before.He had hypesthesia in the left V2-V3 distribution.MRI demonstrated findings suggestive of perineural spread (figures 1 and 2).Local radiation arrested the process.Perineural spread occurs in 2.5%-5% of head and neck cancers, 1 particularly in basal and squamous cell carcinomas. 2 This phenomenon commonly affects the trigeminal or facial nerves.The insidious nature of the symptoms and the history of previous resection of a facial tumor should raise the suspicion of this disorder, and help differentiate it from more common trigeminal neuropathies.
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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) | 0.000 | 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 | 0.001 |
| 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".