Sarcomatoid Carcinoma (Carcinosarcoma) of the Lung Mimics Malignant Pleural Mesothelioma on 18F-FDG PET/CT
Bibliographic record
Abstract
Sarcomatoid carcinomas of the lung account for less than 0.4% of all lung tumors, and they are a heterogeneous group of non–small-cell lung carcinomas containing a sarcoma or sarcoma-like component. They have a poor prognosis, with an overall 5-year survival of 25% compared with 45% for other types of non–small-cell lung carcinomas. The literature on the use of 18F-FDG PET/CT to stage these tumors is very limited, and their PET/CT imaging characteristics have not been previously described. We report on 2 cases of sarcomatoid carcinoma that resembled malignant pleural mesothelioma on 18F-FDG PET/CT and were correctly staged.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 teacher head, 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".