Case—Diagnostic Pitfalls with Concurrent Posterior Urethral Valves and Duodenal Atresia
Bibliographic record
Abstract
Background/Objectives: This case study presents the complex management of a neonate with concurrent posterior urethral valves (PUV) and duodenal atresia (DA), highlighting diagnostic challenges due to overlapping and atypical imaging findings. Methods: A retrospective chart review was performed with a focus on pre- and postnatal imaging and clinical findings throughout the patient’s course of care. Results: A 32-week gestational referral revealed polyhydramnios, a double-bubble sign, and hydronephrosis. DA-associated polyhydramnios masked the expected oligohydramnios and other in utero sonographic signs of PUV, complicating prenatal diagnosis. Postnatally, early urethral stenting for DA repair obscured typical PUV imaging. PUV diagnosis was confirmed by cystoscopy on day 73. Conclusions: We emphasize the importance of multidisciplinary care and appreciating diagnostic uncertainties in neonates with concurrent obstructive uropathy and intestinal obstruction.
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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 | 0.011 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.003 | 0.003 |
| Insufficient payload (model declined to judge) | 0.002 | 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".