RT Journal Article SR Electronic T1 Tracheobronchopathia osteochondroplastica: End stage of tracheo bronchial amyloidosis JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP p3605 VO 38 IS Suppl 55 A1 Houda Gharsalli A1 Saloua Azzabi A1 Besma Ourari Dhahri A1 Walid Feki A1 Soumaya Rammeh Rommani A1 Mohamed Ali Baccar A1 Jihéne Ben Ammar A1 Meizar Salah Said A1 Leila El Gharbi A1 Hichem Aouina A1 Hend Bouacha YR 2011 UL http://erj.ersjournals.com/content/38/Suppl_55/p3605.abstract AB Introduction: Tracheobronchopathia osteochondroplastica (TO) is an uncommon benign disease affecting the cartilaginous wall of large airways. Etiology of TO is unknown, however review of literature reveals an intimate interrelationship between TO and amyloidosis and many authors suggest that TO is an advanced stage of primary tracheobronchial amyloidosis. We describe a case illustrated TO as an end stage of amyloidosis.Case report: A 47 year old nosmoker woman was admitted in1997 for dyspnea reported since 2 years. Pulmonary function test showed an obstructive pattern. Asthma was suspected but we haven't amelioration of symptoms with appropriate treatment. Fiberoptic bronchoscopic examination revealed infiltration and nodular lesions protruding into the lumen of the lower third portion of trachea and the main bronchi. AA amyloidosis was confirmed by endobronchial biopsy. Extensive investigations leaded to rule out systemic amyloidosis. Recurrent lower respiratory tract infections marked the outcome of our patient treated by antibiotics.Thirteen years after; the patient was admitted for cough, dyspnea, wheezing. Previous treatment with prednisone and inhaled bronchodilatator had no notable response.Fiberoptic Bronchoscopic examination demonstrated nodular lesions distributed along the cartilaginous rings of lower portion of trachea and the main bronchi. Endobronchial biopsy confirmed the TO.