Isolated Mediastinal Kocuria rosea Infection Mimicking Malignancies
Bibliographic record
Abstract
Isolated mediastinal Kocuria rosea infection is a rare condition and presentation can be variable. We report an unusual case of Kocuria rosea infection which presented as solitary pulmonary nodules and isolated lymph node swelling, entirely confined within the tracheal bifurcation and 18-fluoredeoxyglucose position emission tomography and computed tomography (18FDG PET/CT)-avid, thereby mimicking a neoplastic lesion. Owing to the large differential diagnosis, which includes diseases such as pulmonary neoplasia and lymph node metastases, a biopsy via mediastinoscopy was to be attempted, so hopefully avoiding thoracotomy. Histopathology analysis of the resected mediastinal lymph nodes (MLNs) demonstrated no malignant cells, but rather necrotizing MLNs, which is classically associated with Kocuria rosea infection. The patient was asymptomatic and biopsy allowed a precise diagnosis. Kocuria rosea infection is rare; it should be considered when FDG PET shows intense FDG uptake in non-regionally swollen lymph nodes. J Med Cases. 2015;6(8):339-341 doi: http://dx.doi.org/10.14740/jmc2122w
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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".