Metastatic Colorectal Adenocarcinoma of the Mastoid Bone: A Rare Case Report
Bibliographic record
Abstract
Background: Metastases to the temporal bone are exceedingly rare, representing <0.2% of all head and neck tumors.The most common primary malignancies are from breast, lung, prostate and skin.Given the rarity of temporal bone metastases and paucity of such case reports in the literature, the dissemination of a diagnostic approach is a worthwhile venture.Case Report: Here we describe a patient with known metastatic adenocarcinoma of the descending colon presenting with unilateral aural fullness, hearing loss and ataxia.Radiographic investigations revealed a soft tissue mass within the mastoid bone, and biopsy confirmed metastatic colorectal adenocarcinoma.The patient's disease progressed over time, causing facial paralysis, and eventually her demise.Conclusion: This unique and uncommon case highlights the importance of thoroughly investigating patients with known malignancy who present with unilateral otologic and vestibular 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 | 0.004 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.003 | 0.002 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.006 | 0.003 |
| 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".