Retroperitoneal fibrosis: An extraarticular manifestation of ankylosing spondylitis
Bibliographic record
Abstract
Introduction Idiopathic retroperitoneal fibrosis (RPF) was first described as a clinical entity in 1948 (1). Most patients with RPF are 30–60 years old, and very few pediatric cases have been reported. Although in most cases the RPF is idiopathic, it may also be secondary to underlying infection, malignancy, drugs, radiation, trauma, or surgery. In most patients, fibrosis is confined to the retroperitoneal region of the lower lumbar spine; however 15% have fibrosis in other organs (2). Spondylarthritis, which may also be complicated by extraarticular fibrosis, has been reported in patients with RPF. We present a case of a 7-year-old boy who originally presented with RPF and was later diagnosed as having spondylarthritis, and discuss the relevance of this association.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".