The Hidden Cause of Dysphagia – Epiphrenic Diverticulum and Esophageal Motility Disorders
Bibliographic record
Abstract
65-year-old woman presented with slowly progressing dysphagia of two to three years’ duration. The patient’s dysphagia was intermittent and was associated with solid food during the initial phase, but progressed to difficulty with swallowing liquids. During the few months before presentation, she also experienced heartburn, nausea and vomiting. She denied significant weight loss or anorexia. Her medical history was notable for cholecystectomy 11 years previously, and she was taking ranitidine. Physical examination and routine laboratory investigations including complete blood count, renal and liver function tests were within the normal range. She underwent gastroscopy followed by a barium swallow, which demonstrated an epiphrenic diverticulum and a midesophageal diverticulum (Figure 1). Following barium swallow, she underwent esophageal manometry (Figure 2). This demonstrated simultaneous contraction in the esophageal body of normal amplitude and duration (Figure 2). The resting lower esophageal sphincter pressure was elevated (49 mmHg), but the relaxation was complete (Figure 2), confirming an atypical variant achalasia. Gastroscopy also demonstrated epiphrenic diverticulum and a ‘tight’ gastroesophageal junction without a mucosal abnormality. The endoscope was passed through the gastroesophageal junction with a slight resistance.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".