Adult Bowel Obstruction Secondary to Meckel’s Associated Congenital Band: A Case Report and Literature Review
Bibliographic record
Abstract
Background: Bowel obstruction in the adult population accounts for 300,000 hospital admissions in the U.S. annually, with intra-abdominal adhesions as the most common etiology. Congenital etiologies of bowel obstruction are rare in comparison, but difficult to diagnose in the setting of previous abdominal surgery. Meckelu2019s diverticulum and its associated anomalies can cause bowel obstruction via intussusception, internal hernia, inflammation, or direct bowel compression. Typically, the number of complications associated with Meckelu2019s diverticulum decreases with age. In this review we analyze the cases of bowel obstruction in adults secondary to congenital bands associated with Meckelu2019s Diverticulum.Methods: A literature search was conducted using the Medline (Ovid) database with MeSH terms Vitelline Duct, Meckel Diverticulum, and Intestinal Obstruction.Results: Fifty-one cases of bowel obstruction secondary to Meckelu2019s associated bands in adults were identified from twenty papers. The age of reported cases ranged from 18-83 years with a mean of 37.7 years. Males were involved in 76% of the cases while females were involved in 24%. The number of reported cases decreased with advancing age. Internal hernia was the main etiology of bowel obstruction associated with Meckelu2019s bands.Conclusion:Bowel obstruction secondary to a congenital band associated with Meckelu2019s diverticulum is rare in adults. Internal hernia is the primary etiology of obstruction however direct compression of the distal bowel is also possible. Congenital etiologies should continue to remain on the differential diagnosis for bowel obstruction even in the context of previous abdominal surgery.
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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 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.009 | 0.009 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".