Isolated Visceral Small Artery Fibromuscular Hyperplasia-Induced Ischemic Colitis Mimicking Inflammatory Bowel Disease
Bibliographic record
Abstract
A unique case of fibromuscular hyperplasia (FMH) of the visceral vasculature is presented. A 31-yr-old patient presented with a chronic colitis initially diagnosed as ulcerative colitis 1 yr earlier. On presentation, the endoscopic appearance showed deep linear ulcerations and cobblestoning and was more consistent with Crohn's disease. Biopsies of the area, however, suggested an ischemic etiology. The patient failed to respond to local 5ASA and prednisone therapy and progression of the disease led to a left hemicolectomy. A diagnosis of a small vessel fibromuscular arteriopathy was made on the resected specimen. This is the first case presentation of FMH mimicking inflammatory bowel disease. The lack of any systemic involvement of FMH with isolated small vessel disease has never been reported and serves as an index case of which clinicians should be aware. The literature is reviewed and the possible implications are discussed.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 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".