Primary Extraskeletal Chondrosarcoma in the Cervical Nerves of a Dog
Bibliographic record
Abstract
An 11-year-old, 35 kg, castrated male Labrador retriever expressed acroparalysis and dysstasia. A mass involving the medulla spinalis through the foramina nervosa between the 5th and 6th cervical vertebrae was found by MRI examination. At necropsy, there was a translucent white cartilage-like mass (1.5×2.5cm) in the epineurium of the right 6th cervical nerve. The mass was present in the epidural layer of spinal canal, and compressed the 5th cervical cord. The neoplastic tissue had a lobular structure and cartilageous matrix. The tumor cells had swollen nuclei, differences in size, binuclear cells, and rare mitotic figures. Immunohistochemically, the cytoplasms and nuclei of the tumor cells were consistently positive for S-100 protein. This tumor was thought to have derived from pluripotent undifferentiated mesenchymal cells in the epineurium of the right 6th cervical nerve, with a diagnosis of extraskeletal chondrosarcoma. Extraskeletal chondrosarcomas are extremely rare in both human and domestic animals.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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 | 0.000 |
| 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".