Pneumonia pertains to the inflammation of the lung, particularly the pulmonary alveoli. It is usually caused by infection with viruses or bacteria (e.g. Streptococcus pneumonia, Staphylococcus aureus, Haemophilus influenza, and Klebsiella pneumoniae). It may be classified anatomically, i.e. according to the lung area affected: lobar pneumonia and bronchopneumonia. Radiological examination (via x-rays) is used to determine the anatomic type of pneumonia. Lobar pneumonia is a type of pneumonia that affect only a single lobe or section of a lung. In contrast, bronchopneumonia is a multilobar type of pneumonia. It usually begins and centered in and around the lobular bronchi. The terminal bronchioles become clogged with a mucopurulent exudate forming consolidated patches in adjacent lobules. The disease is frequently secondary in character, following infections of the upper respiratory tract, specific infectious fevers and debilitating diseases. In infants and debilitated persons of any age it may occur as a primary affection.
Word origin: broncho- (relating to bronchi) + Ancient Greek pneumonía (“lung disease”), from pneúmōn (“lung”)
- bronchial pneumonia
- lobular pneumonia