Incidental Renal Langerhans Cell Histiocytosis Within Clear Cell Renal Carcinoma: A Case Report and Literature Review
Bibliographic record
Abstract
Langerhans cell histiocytosis (LCH) is a disease characterized by the excessive proliferation and abnormal differentiation of immune cells, including monocytes, T cells, and dendritic cells. The most affected organs are the bones, skin, lungs, liver, and spleen, while renal involvement is rare. LCH primarily affects children and is seldom diagnosed in adults. In this case report, we describe a 64‐year‐old man patient with no prior urological history nor history of LCH and presenting with both localized renal LCH and clear cell renal carcinoma (ccRCC). Renal cancer was first discovered fortuitously on an abdominal computed tomography (CT) scan while the patient presented symptoms of a complicated urinary tract infection. Following radical nephrectomy, LCH foci was detected as incidental histological finding within the ccRCC pathological analysis. Immunohistochemical staining confirmed the positivity of S‐100 and CD1a markers and PCR analysis identified the BRAF V600E mutation. Based on these findings, a diagnosis of ccRCC associated with LCH was established.
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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) | 0.001 | 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".