Bilateral radiation-induced squamous cell carcinoma of the external auditory canal: the effect of immunosuppressive therapy
Bibliographic record
Abstract
BACKGROUND: Squamous cell carcinoma of the external auditory canal is rare, with bilateral cases even rarer. We report the management of a patient with bilateral external auditory canal squamous cell carcinoma related to radiotherapy and immunosuppression. CASE REPORT: A 47-year-old woman with a history of radiotherapy 14 years prior and renal transplantation 6 years prior presented with bilateral external auditory canal squamous cell carcinoma. Squamous cell carcinoma was excised with a purely surgical approach. The two operations included a tympanic membrane graft to preserve hearing on the left side. The patient remains disease-free six months post-op. She uses a bone-conduction hearing aid to good effect on the right side and has mild hearing loss on the left. The operative areas have healed well. DISCUSSION: The patient's previous radiotherapy and immunosuppression may have contributed to her bilateral external auditory canal squamous cell carcinoma. Preventative positron emission tomography scans have the potential to identify second malignancies early, allowing more conservative treatment plans.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".