Omphalomesenteric Duct Remnant As A Cause Of Small Bowel Obstruction With Incidental Appendiceal Carcinoid: A Case Report
Bibliographic record
Abstract
The laparoscopy revealed a fixed adhesive fibrous band from the right lower quadrant passing over the terminal ileum and ceacum, causing partial obstruction as well as twisting of the appendix around this band.The band continued behind the transverse co-Abstract Omphalomesenteric duct remnants are a rare cause of abdominal pain, especially in the adult.Their diagnosis is not straightforward.We report the case of a healthy 25-year-old male presenting with chronic, intermittent abdominal pain over 1 month with no previous abdominal surgeries.Extensive investigations including computed tomography (CT) scan and colonoscopy were non-contributory.Thus a diagnostic laparoscopy was performed, which revealed a fibrous band originating from the anterior abdominal wall at the umbilicus and terminating behind the mid-transverse colon, with cecum and small bowel tethered to it, as well as signs of chronic inflammation in this area.Excision of the band as well as an appendectomy were performed.Histopathology confirmed the specimen to be an omphalomesenteric (vitelline) duct remnant, and also revealed an incidental small carcinoid tumour in the appendix.This case report highlights that undiagnosed abdominal pain with negative investigations needs to be treated with caution to not miss a broader range of diagnoses and that diagnostic laparoscopy is a useful tool.Omphalomesenteric duct remnant is a rare cause of chronic abdominal pain and intermittent obstruction in an adult.
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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 | 0.001 | 0.005 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.002 | 0.002 |
| Bibliometrics | 0.004 | 0.002 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.003 | 0.003 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.006 | 0.003 |
| 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".