Tracheobronchial Involvement as a Sole Manifestation of Relapsing Polychondritis
Bibliographic record
Abstract
STUDY OBJECTIVES: To report the clinical, imaging, and pathologic manifestations of case series of patients in whom the only systemic expression of relapsing polychondritis (RP) was their airway complications. DESIGN: Retrospective review of the medical records of all patients with respiratory complications of RP between 1995 and 2007. SETTING: Tertiary care, university-affiliated hospital. RESULTS: Three patients with RP had just lower airway manifestations as the only sign of their RP. All 3 were women, aged 44, 49, and 54 years. All had an abnormal chest computed tomography scan, although 2 had a completely normal chest x-ray. All had positive tracheal biopsy, which was consistent with the diagnosis of respiratory chondritis. Pulmonary function tests showed severe reduction in forced expiratory volume in 1 second in all patients. Bronchoscopy revealed tracheal narrowing with variable degrees of inflammation and collapsibility in all patients. Two of the 3 patients underwent tracheal and bronchial stent insertion. Pharmacotherapy included prednisone, methotrexate, cyclophosphamide, and leflunomide. The overall outcome was poor. Two patients died as a result of respiratory complications, 25 and 30 months from diagnoses, and 1 is still alive with follow-up of 85 months after presentation. CONCLUSIONS: Lower airway manifestations of RP can be the only sign of the disease. RP has to be considered in the differential diagnosis of patients with recent onset of progressive dyspnea and severe airflow limitation even without other systemic signs of cartilage damage.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".