Suspicious Atypical B-Cell Infiltrates—Significance of Work-up in Urinary and Male Genital Organs
Bibliographic record
Abstract
Genitourinary tract lymphomas are rare and comprise <5% of extranodal lymphomas. Information on prevalence in urinary and male genital tract (GU) organs is limited. A retrospective study of the B-cell lymphomas in the GU organs (kidney, prostate, bladder, testis, and ureter) between January 1, 2011, and September 16, 2021, at our institution was performed. A total of 39 specimens with lymphoma in the GU organs were identified, 51% of which were primary. The most common diagnosis within the primary subgroup was diffuse large B-cell lymphoma (60%), followed by chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL, 15%) and extranodal marginal zone lymphoma (EMZL, 15%) and follicular lymphoma (5%). Kidney was the most common site (36%), followed by testes (20%), bladder (15%), and prostate (13%). All testicular lymphomas were primary. Most bladder lymphomas were secondary (83%). Most of these were either discovered incidentally or presented with organ-specific symptoms. We also identified an interesting example of primary EMZL involving both prostate and bladder and another one of proliferative glomerulonephritis with monoclonal IgG kappa immunoglobulin deposits due to primary CLL/SLL of the kidney. Our study highlights the importance of hematopathologic workup for specimens suspicious for a typical B cell infiltrates in surgical pathology practice.
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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".