Endoscopic mucosal biopsy: histopathological interpretation
Bibliographic record
Abstract
This chapter offers diverse images that provide an overview of endoscopic mucosal biopsy and aims to provide a synopsis through pictures and illustrations rather than through text. The innermost layer of the gastrointestinal (GI) tract is the mucosa, consisting of three components: epithelium, lamina propria, and muscularis mucosae. In the esophagus, stomach, and small bowel, it is rich in lymphatics whereas it is less so in the lower GI tract. The muscularis propria is the main wall of the GI tract and is composed of an inner circular and outer longitudinal layer of smooth muscle. The histological appearance of hyperplastic polyps overlaps significantly with: conditions of generalized gastric mucosal hyperplasia (Ménétrier disease; Cronkhite–Canada syndrome), and hamartomatous polyps and syndromes involving the stomach. Multiple GI tract and cutaneous lipomas are known in patients with ganglioneuromas of the colon but most lipomas of the colon are sporadic lesions centered around the submucosa.
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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 0.007 |
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".