Isolated small bowel disease and multiple lung nodules: an unusual initial presentation of pediatric Crohn’s disease
Bibliographic record
Abstract
Crohn’s disease (CD) is a chronic idiopathic inflammatory disorder of the gastrointestinal tract characterized by transmural inflammation, skip lesions, and architectural changes. Isolated small bowel involvement is seen in approximately 1% of patients with CD at diagnosis. Extraintestinal manifestations can occur, with pulmonary involvement seen in <1% of all CD. We report an unusual case of a previously healthy 12-year old male who presented to hospital with acute abdominal pain, emesis, and fever. He had microcytic anemia, thrombocytosis, elevated C-reactive protein, hypoalbuminemia, digital clubbing, and poor growth. Interestingly, initial upper endoscopy and ileocolonoscopy were unremarkable. Pathology revealed colonic nonnecrotizing granulomas without inflammation. He incidentally was found to have multiple lung nodules despite the absence of respiratory symptoms, and MRE revealed five small bowel strictures. This prompted work-up for alternative etiologies including infectious and rheumatologic, which were negative. Ultimately, five months later, double balloon enteroscopy revealed ileal ulcerations at the strictures and several small aphthous ulcers in the transverse and sigmoid colon. Biopsies showed active ileitis and chronic active colitis with nonnecrotizing granulomas. He developed perianal disease, confirmed on MR pelvis, and a diagnosis of CD was made. The patient started infliximab therapy and is clinically in remission. This is a rare and unique phenotype of CD with initial presentation of multiple lung nodules and isolated small bowel disease. This case highlights the importance of recognizing that pulmonary manifestations should be considered in the absence of respiratory symptoms and that a normal first endoscopy does not preclude a diagnosis of CD.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| 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".