Fatal tension pneumothorax secondary to verminous bronchopneumonia in a white-beaked dolphin: case report and brief literature review
Bibliographic record
Abstract
Pneumothorax is reported infrequently in marine mammals, most often secondary to physical or barometric trauma. We describe tension pneumothorax associated with verminous bronchopneumonia in a juvenile white-beaked dolphin stranded in Québec, Canada. Autopsy findings included a violent escape of air upon opening the pleural cavity, and white nematode-filled cystic nodules extending into the subpleural space and the lung parenchyma. One of these cysts had ruptured on the pleural surface. Numerous nematodes were observed in the lumen of main and secondary bronchi. Mediastinal lymph nodes were also enlarged. Helminths were collected and processed for molecular species identification. Histologically, verminous bronchopneumonia was marked by massive infiltration of the airways by polymorphonuclear and histiocytic cells surrounding adult and larval nematodes. Regional lymph nodes also contained focal infiltrates of polymorphonuclear cells associated with larvae. The nematodes were identified as Halocercus lagenorhynchi according to their morphology and molecular characterization. We attributed the death of this dolphin calf to tension pneumothorax secondary to a massive infection by the lungworm H. lagenorhynchi .
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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 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.004 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 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".