P.140 Illustrated case report: CSF shunt peritoneal catheter obstruction due to omental adhesion and fat stranding
Bibliographic record
Abstract
Background: CSF shunt obstruction secondary to omental adhesion alone, without cyst or pseudocyst formation, is rarely reported in the literature. Here we present a case of distal catheter obstruction due to omental wrapping with an atypical presentation of shunt failure. CT imaging demonstrated omental stranding. The shut revision was entirely laparoscopic. The case is supplemented with intraoperative images. Methods: Chart review and literature search. Results: 33-year-old female with right-sided cystoperitoneal shunt for posterior fossa arachinoid cyst who presented to ED with a picture of a surgical abdomen suggestive of acute cholecystitis. Interestingly, this patient had a gallbladder removed a year ago. CT abdomen showed non-specific findings of omental fat stranding around the tip of the catheter. Although this patient had no headache or any neurological symptoms, CT brain was done and showed increase in the cyst size. Diagnostic laparoscopy showed Intraoperative findings suggestive of active omental role in the aetiology of this shunt malfunction. After adequate adhesiolysis, the catheter was noted to be working and dripping CSF and repositioned into the peritoneal cavity. Conclusions: Shunt malfunctions due to omentoperitoneal adhesion is rarely reported but may in fact be under-recognized. This requires high index of suspicion especially in case of equivocal imaging.
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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) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.005 | 0.003 |
| Insufficient payload (model declined to judge) | 0.010 | 0.003 |
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".