Unusual presentation of Precursor B Lymphoblastic Lymphoma originating from the stomach: One more case and review of the literature
Bibliographic record
Abstract
Precursor B lymphoblastic lymphoma (PBL) is an aggressive neoplasm of precursor lymphocytes of B-cell lineage. Extranodal sites are often affected, however gastrointestinal involvement is rarely encountered. We report a case of PBL diagnosed in gastric biopsy of a 72-year-old female. Endoscopy showed multiple polypoid lesions in the stomach. Histologically, the tumor cells exhibited blastic morphology and immunohistochemical expression of terminal deoxynucleotidyl transferase (TdT), CD79a, CD20, CD10 and PAX-5, whereas they were CD34, MPO, and CD3 negative. The diagnosis of this rare entity in unusual extranodal sites such as the stomach is challenging, and it is based on detailed histopathological and immunohistochemical analysis combined to clinical correlations.
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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) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.005 | 0.004 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.003 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.002 |
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".