Inverted Meckel’s Diverticulum Presenting as Chronic Anemia: Case Report and Review of the Literature
Bibliographic record
Abstract
M eckel's diverticulum is a remnant of the omphalomesenteric duct and is the most common congenital abnormality of the gastrointestinal tract.Complications resulting from a Meckel's diverticulum occur in up to 4% of patients with this anomaly and include obstruction, "diverticulitis," gastrointestinal hemorrhage, intussusception and perforation.This report describes the unusual presentation of a Meckel's diverticulum as a small-bowel polyp in a patient with chronic anemia. Case historyA 47-year-old man initially presented with iron deficiency anemia.His medical history was significant for ongoing "heartburn" and a previous dilatation for a benign esophageal stricture.He was also taking a compound containing acetylsalicylic acid for chronic back pain.Physical examination was unremarkable.Laboratory investigations at that time revealed a hemoglobin of 90 g/L with microcytic indices, a serum ferritin level of 5 µg/L (normal 40-260 µg/L) and stool samples that tested positive for occult blood.Management at the time included discontinuation of the anti-inflammatory medication.Findings on upper endoscopy and small-bowel biopsies were normal.At colonoscopy, an angiodys-
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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 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.004 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.006 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 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".