Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Bronchopathia Osteochondroplastica
- Radiologic Findings
- Chest radiogram shows atelectasis of anteromedial basal segment of left lower lobe. Pre-contrast and contrast enhanced chest CT with mediastinal window setting represents a segmental consolidation and atelectasis containing a fluid bronchogram in the anteromedial basal segment of the left lower lobe with several endobronchial calcified nodules and bronchial obstruction in the proximal segmental bronchus.
A fiberoptic bronchoscopy was done and the left lower lobar bronchus was totally occluded by a hard irregularly lobulated mass that was difficult for mucosal biopsy.
A left lower lobectomy was done by way of thoracotomy. The resected tumor was 1.8 x 1.9 cm solitary calcified mass attached at the orifice of basal segment of the left lower lobe. On microscopic exam revealed and endobronchial polypoid mass, mainly composed of mature bone having abundant marrow component and mature cartilage. These features were suggestive for bronchopathia osteochondroplastica (BO).



- Brief Review
- Tracheobronchopathia osteochondroplastica (TBO) is a rare disorder of the large airways characterized by the presence of multiple, very small osseous nodules localized to the submucosa of the cartilaginous tracheal or bronchial wall. The lesion has mostly been reported to occur in the lower two-thirds of the trachea, and occasionally has been found to involve the proximal bronchi as well. Unlike the usual case of TBO, it is very rare that exclusive bronchial involvement and solitary mass formation.
The incidence of TBO at autopsy was estimated of approximately 3/1,000, while data from bronchoscopy were widely varying from 1/125 to 1/6000. The majority of patients have mild respiratory symptoms such as a cough, small amount hemoptysis, exertional dyspnea, wheezing or recurrent tracheobronchial infections.
The diagnosis of a TBO can be made by fiberoptic bronchoscopy; the findings of this disorder are unique and include multiple osteocartilaginous calcified nodules within the submucosa of the anterior and lateral aspects of the tracheobronchial tree; the membranous portions of the trachea are characteristically spared in contrast to tracheobronchial amyloidosis. Chest CT, MRI or virtual bronchoscopy can all detect these submucosal nodules in the trachea and main bronchi; in half of the cases the nodules are calcified.
In this case, there was no typical multiple tracheobronchial calcified nodules. Because we could not exclude lung malignancy in imaging study, surgical resection was performed.
- References
- 1.Leske V, Lazor R, Coetmeur D, Crestani B, Chatte G, Cordier JF. Tracheobronchopathiaosteochondroplastica: a study of 41 patients. Medicine (Baltimore). 2001 Nov;80(6):378-90.
2.Nienhuis DM, Prakash UB, Edell ES. Tracheobronchopathiaosteochondroplastica. Ann OtolRhinolLaryngol. 1990 Sep;99(9 Pt 1):689-94.
3.Doshi H, Thankachen R, Philip MA, Kurien S, Shukla V, Korula RJ. Tracheobronchopathiaosteochondroplastica presenting as an isolated nodule in the right upper lobe bronchus with upper lobe collapse. J ThoracCardiovasc Surg. 2005 Sep;130(3):901-2.
4.Shigematsu Y, Sugio K, Yasuda M, Sugaya M, Ono K, Takenoyama M, et al. Tracheobronchopathiaosteochondroplastica occurring in a subsegmental bronchus and causing obstructive pneumonia. Ann Thorac Surg. 2005 Nov;80(5):1936-8.
5.Meyer CN, Dossing M, Broholm H. Tracheobronchopathiaosteochondroplastica.Respir Med. 1997 Sep;91(8):499-502.
- Keywords
- Airway, Bronchial abnormlity,