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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.
The diagnosis of gangrene is based on symptoms and supported by tests such as medical imaging. [6] Treatment may involve surgery to remove the dead tissue, antibiotics to treat any infection, and efforts to address the underlying cause. [5] Surgical efforts may include debridement, amputation, or the use of maggot therapy. [5]
Bacterial infection is by far the most common cause of necrotizing fasciitis. Despite the term "flesh-eating disease," the organisms do not eat human tissue; rather, they release virulence factors and toxins that cause tissue death. Typically, the infection enters the body through a break in the skin such as a cut or burn. [3]
The disease's symptoms can range from catastrophic neurological impairment to an asymptomatic condition brought on by impalpable pulses or bruits. [7] Non-specific features include mild anemia, myalgia, arthralgia, weight loss, malaise, night sweats, and fever. [8] Giant cell arteritis (GCA) is the most common type of systemic vasculitis in adults.
Necrosis is caused by factors external to the cell or tissue, such as infection, or trauma which result in the unregulated digestion of cell components. In contrast, apoptosis is a naturally occurring programmed and targeted cause of cellular death. While apoptosis often provides beneficial effects to the organism, necrosis is almost always ...
Liquefactive necrosis (or colliquative necrosis) is a type of necrosis which results in a transformation of the tissue into a liquid viscous mass. [1] Often it is associated with focal bacterial or fungal infections, and can also manifest as one of the symptoms of an internal chemical burn . [ 2 ]
Necrosis can be found mostly between the three distals of the esophagus, but stops abruptly at the gastroesophageal junction. [2] The basic and most common symptoms reported are blood in stool and blood in vomiting. Upper gastrointestinal bleeding then is reported, and is very commonly represented in elderly patients. [4]
Untreated, the infection may lead to rapid destruction of the periodontium and can spread, as necrotizing stomatitis or noma, into neighbouring tissues in the cheeks, lips or the bones of the jaw. As stated, the condition can occur and be especially dangerous in people with weakened immune systems .
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