Delayed Presentation of Thymoma-Related Aplastic Anemia: An Unusual Presentation of a Rare Complication
Bibliographic record
Abstract
A 68-year-old Caucasian man presented with gross hematuria and oral mucosal bleeding. The patient was known to have an anterior mediastinal mass, highly suspicious for thymoma, which was incidentally identified on imaging, 8 years prior. The patient then declined treatment and was lost to follow-up. On presentation, imaging re-demonstrated the anterior mediastinal mass and the patient was found to have profound pancytopenia. Bone marrow biopsy confirmed the diagnosis of aplastic anemia (AA). Despite optimal treatment, the patient expired on day 9 of admission. In this case we report an unusual presentation of thymoma-related AA (TR-AA), a rare complication of thymoma, presenting years after initial diagnosis in a patient with long standing thymoma that was left untreated as per the patient's wishes. To our best knowledge, this is the first published report where TR-AA presented 8 years after initial diagnosis in a patient with unresected and untreated thymoma.
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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 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 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".