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Tracheobronchopathia osteochondroplastica.

N Berend, A C Harrison, B J Hartnett

Australian and New Zealand Journal of Medicine

|April 1, 1979

Summary

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Tracheobronchopathia osteochondroplastica (TO) is a rare airway disease. Lung function tests may not detect airway obstruction in TO patients, necessitating its consideration in differential diagnoses for hemoptysis.

Area of Science:

Pulmonology
Pathology
Internal Medicine

Background:

Tracheobronchopathia osteochondroplastica (TO) is a rare, benign condition characterized by the formation of osteocartilaginous nodules in the airway walls.
The exact etiology of TO remains unknown, but it is thought to involve abnormal cartilage and bone formation within the tracheobronchial tree.

Observation:

This report details the clinical, pathological, and physiological features of two patients diagnosed with TO.
Both patients presented with significant central airway involvement, indicative of substantial obstruction.
Despite extensive airway compromise, standard lung function testing failed to provide unequivocal evidence of extrapulmonary airway obstruction.

Findings:

Lung function tests may be insufficient to diagnose the severity of airway obstruction in TO.

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The bronchoscopic appearance of TO can mimic endobronchial neoplasms, posing a diagnostic challenge.

TO is exceptionally rare, with limited documented cases globally.

Implications:

Clinicians should consider TO in the differential diagnosis of patients presenting with hemoptysis, especially when central airway lesions are suspected.
Further research is needed to refine diagnostic methods for TO, particularly non-invasive techniques.
Early recognition and diagnosis of TO are crucial for appropriate patient management and to avoid misdiagnosis as malignancy.