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Lung abscess is a type of liquefactive necrosis of the lung tissue and formation of cavities (more than 2 cm) [1] containing necrotic debris or fluid caused by microbial infection. This pus -filled cavity is often caused by aspiration, which may occur during anesthesia, sedation, or unconsciousness from injury.
Lower respiratory tract infection (LRTI) is a term often used as a synonym for pneumonia but can also be applied to other types of infection including lung abscess and acute bronchitis. Symptoms include shortness of breath, weakness, fever, coughing and fatigue. [3]
Pneumonia fills the lung's alveoli with fluid, hindering oxygenation. The alveolus on the left is normal, whereas the one on the right is full of fluid from pneumonia. Pneumonia frequently starts as an upper respiratory tract infection that moves into the lower respiratory tract. [55] It is a type of pneumonitis (lung inflammation). [56]
M. abscessus can cause lung disease, skin infections, central nervous system infections, bacteremia, eye infections, and other, less common diseases. [7] Chronic lung disease occurs most commonly in vulnerable hosts with underlying lung disease such as cystic fibrosis, bronchiectasis, and prior tuberculosis. Clinical symptoms of lung infection ...
If left untreated, aspiration pneumonia can progress to form a lung abscess. [5] Another possible complication is an empyema , in which pus collects inside the lungs. [ 6 ] If continual aspiration occurs, the chronic inflammation can cause compensatory thickening of the insides of the lungs, resulting in bronchiectasis .
This leads to the accumulation of cellular debris within the lungs. This leads to consolidation or solidification, terms used for macroscopic or radiologic appearance of the lungs affected by pneumonia. Bacterial pneumonia is mainly classified into lobar and diffuse depending on the degree of lung irritation or damage. [4]
Necrotizing pneumonia (NP), also known as cavitary pneumonia or cavitatory necrosis, is a rare but severe complication of lung parenchymal infection. [ 1 ] [ 2 ] [ 3 ] In necrotizing pneumonia, there is a substantial liquefaction following death of the lung tissue, which may lead to gangrene formation in the lung.
Abscess - A pocket of fluid and bacteria may appear on X-ray as a cavity in the lung. Abscesses, typical of aspiration pneumonia , usually contain a mixture of anaerobic bacteria . Although antibiotics can usually cure abscesses, sometimes they require drainage by a surgeon or radiologist .