upper lung

upper lung

A functional division of the lungs which is based on differences in:
(1) Physiology:
Upper lungs have greater mechanical stress, lower lymphatic flow, higher oxygen tension and pH; and
 
(2) Pathology:
Upper lungs are more often involved by chronic granulomatous disease (e.g., tuberculosis, sarcoidosis, silicosis), hypersensitivity pneumonitis, and smoking-related disease (e.g., emphysema, respiratory bronchiolitis, pulmonary Langerhans cell histiocytosis).
References in periodicals archive ?
The x-rays show a dark mass across your upper lung.
The importance of inhalation devices in drug delivery has traditionally derived from their ability to deliver pharmaceuticals to the upper lung and respiratory system for localized treatment of pulmonary diseases such as asthma and emphysema.
21-23) These findings can be diffuse but tend to involve mainly the upper lung zones.
There was a hypoplastic right pulmonary artery arising from the proximal descending aorta, supplying the right upper lung zone.
This creates a relatively higher nitrogen concentration in the upper lung zones.
In CB patients with normal PAPm and high PAPm at rest pulmonary flow has tendency to redistribution to upper lung zones.
Of the 20 patients who had undergone chest x-rays prior to treatment, 2 had abnormal results (left upper lung nodules).
His chest x-ray on this admission revealed a large, left-sided pleural effusion along with a small pneumothorax in the left upper lung zone.
A fourth wound left a ``through and through'' wound to the right upper lung.
Eight out of ten asthma attacks in children and 40 per cent of attacks in adults were upper lung infections such as influenza, it is claimed.
Breath sounds over the right upper lung lobe were remarkably diminished.