Velocity profiles, local deposition efficiencies (DE), and deposition patterns of aerosol particles in the first three generations (i.e., double bifurcations) of an airway model have been simulated numerically, in which the airway model was constructed from computed tomography (CT) scan data of real human tracheobronchial airways. Three steady inhalation conditions, 15, 30, and 60 L/min, were s...

We present a 53-year old man with destroyed lung syndrome (right upper and middle lobes and S6 of lower lobe with bronchial stricture between the right main and intermediate bronchus) due to tuberculosis 25 years earlier. Aspergillus infection in the destroyed lung was suspected on the basis of antigen positivity. The patient underwent right upper and middle lobectomy, S6 segmentectomy and bron...

Pulmonary atelectasis may be caused by endobronchial lesions or by extrinsic compression of the bronchus. However, lung collapse due to compression from a thoracic aneurysm is uncommon. We report a 76-year-old hypertensive female patient who has pulmonary atelectasis due to an extrinsic compression from a descending thoracic aortic aneurysm, and discuss possible treatment options.

We report the findings in a patient with shortness of breath due to pulmonary hypertension five years after left pneumonectomy. Mediastinal recurrence of an incompletely resected and slowly growing adenoid cystic carcinoma of the left main bronchus had encased the right main pulmonary artery.

A 69-year-old woman was admitted to hospital 4 times from November 2007 to June 2009. The patient had silicosis complicated by broncholithiasis, esophagobronchial fistula, and relapsed tuberculosis. She had worked as a stone crusher for 3 years and was exposed to a large amount of quartz dust. Barium esophagography, gastroesophageal endoscopy, and biopsy suggested esophageal-related chronic inf...

We report a case of aorto-bronchial ®stula 7 years after implantation of a self-expanding metal stent into the left main bronchus. The clinical presentation was characterised by left-sided chest pain, dyspnea and a single bout of haemoptysis. The ®stula was surgically managed by aortic resection and primary repair of the aorta, and patch repair of the left main bronchus over a Poly ̄ex covered b...

Endobronchial metastasis of leiomyosarcoma is rare, but it can cause life-threatening complications, such as massive hemoptysis, respiratory failure or even death. The development of new endoscopic modalities allows for effective endobronchial management. We report three patients with endobronchial metastases from advanced leiomyosarcomas which caused bronchial obstruction. The bronchoscopic ex...

A 75-year-old woman with no history of skin tumors came to our clinic complaining of hemoptysis lasting for three months. Chest computed tomography (Picture 1A) and an image of the left main bronchus on virtual endoscopy (Picture 1B) demonstrated endobronchial polyps in the left main bronchus and proximal portion of the lingular bronchus. Bronchoscopy revealed two polypoid tumors arising from t...

A 25-year-old female presented with sudden-onset dyspnoea. A chest X-ray showed total atelectasis on the left haemithorax (Fig. 1). A chest computed tomography (CT) revealed a cystic mass in the posterior mediastinum that compressed the left main bronchus (Fig. 2). Pathological examination confirmed a broncho-genic cyst in the posterior mediastinum. Figure 1: Chest X-ray showing total atelectas...