Question:

Regarding the imaging features of Tracheobronchopathia Osteochondroplastica, mark true?
1. The calcified nodules arise from anterior and lateral wall of trachea.
2. Nodules project into the tracheal lumen.
3. Larynx and proximal trachea are most commonly affected.
4. Tracheomalacia is an important feature of this condition.
5. The nodules are always diffusely scattered in airways.





Answer:

The correct answers for the question "Regarding the imaging features of Tracheobronchopathia Osteochondroplastica, mark true?" are:

1. The calcified nodules arise from anterior and lateral wall of trachea.

2. Nodules project into the tracheal lumen.



Explanation
1, 2. The calcified nodules arise from anterior and lateral aspect of inner wall of trachea with sparing of posterior wall. [CT scan demonstrates a characteristic pattern of calcified nodules arising from the anterior and lateral aspect of the inner tracheal wall protruding into lumen, in severe form resulting in luminal narrowing].

3. Larynx and proximal trachea are not the most commonly affected locations. [Although the lesions may extend anywhere from the larynx to the peripheral bronchi, they are more commonly seen in distal two third of trachea and proximal bronchi].

4. Tracheomalacia is not a feature of this condition. [Tracheomalacia is not present].

5. Both focal and diffuse forms are well reported. [Focal form of TPO has also been described causing obstructive collapse].



From the manuscript:
Tracheobronchopathia Osteochondroplastica - A rare or an overlooked entity?
Radiology Case. 2013 Mar; 7(3):16-25


This article belongs to the Chest section.




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From the manuscript

Tracheobronchopathia Osteochondroplastica - A rare or an overlooked entity?

Free full text article: Tracheobronchopathia Osteochondroplastica - A rare or an overlooked entity?

Abstract
Tracheobronchopathia osteochondroplastica is an idiopathic non-malignant disease of large airways featured by submucosal cartilaginous to osseous nodules overlying the cartilaginous rings, which may be focal or diffuse. Clinical presentation varies from asymptomatic to symptoms like breathlessness, recurrent chest infections, cough and hemoptysis. Due to the lack of awareness of this disease, it remains an under recognized entity. We are describing the computed tomography and bronchoscopic findings of two recently diagnosed cases at our institute. The purpose of this report is to familiarize radiologists with imaging appearance of this condition, with the goal of increasing clinical suspicion of this uncommon condition.






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1. Calcification

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5. Tracheobronchopathia osteochondroplastica

6. TPO


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