Search results
Results From The WOW.Com Content Network
It is also in perivascular, peribronchial and even interstitial areas in the lower airways of the lung. [3] To call it BALT it has to be structured accumulation of lymphocytes and other immune cells. There are lymphoid follicles with apparent germinal centres with most B-cells surrounded by T-cell area.
Bronchitis is inflammation of the bronchi (large and medium-sized airways) in the lungs that causes coughing. Bronchitis usually begins as an infection in the nose, ears, throat, or sinuses. The infection then makes its way down to the bronchi. Symptoms include coughing up sputum, wheezing, shortness of breath, and chest pain.
[4] [13] The presence of inflammation and infection in the airways also results in the production of excess mucus, which must be coughed up as sputum. [4] [6] The combination of inflammation, nodule development, infection, mucus, and frequent cough contributes to the breathing difficulties in DPB. [4] [5]
Bronchoconstriction is defined as the narrowing of the airways in the lungs (bronchi and bronchioles). Air flow in air passages can get restricted in three ways: [3] a spasmodic state of the smooth muscles in bronchi and bronchioles; an inflammation in the middle layers of the bronchi and bronchioles; excessive production of mucus.
Asthma is a common pulmonary condition defined by chronic inflammation of respiratory tubes, tightening of respiratory smooth muscle, and episodes of bronchoconstriction. [1] The Centers for Disease Control and Prevention estimate that 1 in 11 children and 1 in 12 adults have asthma in the United States of America. [ 1 ]
An airway obstruction can be caused by either an intraluminal mass such as a tumor or a foreign body. [31] The presence of an airway obstruction leads to a cycle of inflammation. [3] It is important to identify the presence of an obstruction because surgical resection is often curative if obstruction is the cause. [32]
A bronchus (/ ˈ b r ɒ ŋ k ə s / BRONG-kəs; pl.: bronchi, / ˈ b r ɒ ŋ k aɪ / BRONG-ky) is a passage or airway in the lower respiratory tract that conducts air into the lungs.The first or primary bronchi to branch from the trachea at the carina are the right main bronchus and the left main bronchus.
It is the acute inflammation of the bronchi, accompanied by inflamed patches in the nearby lobules of the lungs. [1] It is often contrasted with lobar pneumonia; but, in clinical practice, the types are difficult to apply, as the patterns usually overlap. [2] Bronchopneumonia (lobular) often leads to lobar pneumonia as the infection progresses.