Hyperplastic Mesothelial Cells in Mediastinal Lymph Node Sinuses With Extranodal Lymphatic Involvement
Bibliographic record
Abstract
We describe a patient with hyperplastic mesothelial cells localized to mediastinal lymph node sinuses. These mesothelial cells were originally misdiagnosed as metastatic carcinoma, and the patient received radiotherapy. Histologic review, immunohistochemistry, and ultrastructural studies confirmed mesothelial cell origin. These nodal mesothelial cells were associated with pericardial and pleural effusions. Extranodal lymphatics also contained hyperplastic mesothelial cells, confirming their mode of lymphatic transport to node sinuses. This finding supports the theory that hyperplastic mesothelial cells derive from reactive serosal mesothelium and are dislodged into draining lymphatics. This is the first report, to our knowledge, that demonstrates the pathogenetic significance of this lymphatic transport mechanism. Awareness of intralymphatic and nodal benign hyperplastic mesothelial cells and their mimicry of invasive malignant neoplasms is important for accurate diagnoses and appropriate therapy.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| 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 | 0.000 |
| 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 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".