Segmental absence of intestinal musculature increasingly recognized in premature infants with perforated viscus: A case series
Bibliographic record
Abstract
Segmental absence of intestinal musculature (SAIM) is a pathological diagnosis, denoting focal absence of the muscularis propria in the presence of intact surrounding structures. This condition often presents as spontaneous intestinal perforation (SIP) and can be difficult to distinguish clinically from necrotizing enterocolitis (NEC). We present 5 cases of premature babies with gestational age ranging from 24 + 3 weeks up to 32 + 1 weeks, who all presented with intestinal perforation before the 15th day of life. Three patients presented with a distended abdomen and discoloration and were subsequently found to have pneumoperitoneum on abdominal x-ray (AXR). The 2 other patients presented with clinical deterioration but without signs of intestinal perforation and were subsequently found to have pneumoperitoneum on AXR. All underwent bowel resection of perforated bowel with either ileostomy with mucous fistula or primary end-to-end anastomosis. Two patients required repeat exploratory laparotomies within a week of their initial surgery due to pneumoperitoneum in subsequent AXR caused by new perforations in other parts of the small bowel. One patient sustained an iatrogenic liver injury intra-operatively and passed away 1 day post-operatively. All patients were found to have SAIM on histopathological examination. SAIM is a pathological diagnosis that can manifest as SIP and may denote a risk for recurrent peritonitis in premature infants who underwent bowel resection for perforated viscus without a clear etiology.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".