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However, a 2007 study that used CT to evaluate lung cavities showed no relationship between wall thickness and the likelihood of malignancy. [5] It did show that malignant cavities are more likely than benign cavities to have an irregular internal wall (49% vs 26%) and have an indentation of the outer wall of the cavity (54% vs 29%). [5]
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 ]
Most commonly, it is used in contradistinction to a "walled-off" pus-filled collection , although a phlegmon may progress to an abscess if untreated. A phlegmon can localize anywhere in the body. [1] The Latin term phlegmōn is from Ancient Greek φλέγω (phlégō) 'burn'.
Periapical cysts begin as asymptomatic and progress slowly. Subsequent infection of the cyst causes swelling and pain. Initially, the cyst swells to a round hard protrusion, but later on the body resorbs some of the cyst wall, leaving a softer accumulation of fluid underneath the mucous membrane. [citation needed]
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.
Lesions at the subpericardium and midwall enhancement of basal septum or inferolateral wall is strongly suggestive of sarcoidosis. [38] MRI can also follow up on the treatment efficacy of corticosteroids and prognosis of cardiac sarcoidosis. [106] PET scan is able to quantify disease activity which cannot be performed by CMR. [107]
Pneumatosis intestinalis (also called intestinal pneumatosis, pneumatosis cystoides intestinalis, pneumatosis coli, or intramural bowel gas) is pneumatosis of an intestine, that is, gas cysts in the bowel wall. [1] [2] As a radiological sign it is highly suggestive for necrotizing enterocolitis.
Caseous necrosis or caseous degeneration [1] (/ ˈ k eɪ s i ə s /) [2] is a unique form of cell death in which the tissue maintains a cheese-like appearance. [3] Unlike with coagulative necrosis, tissue structure is destroyed. Caseous necrosis is enclosed within a granuloma. Caseous necrosis is most notably associated with tuberculoma. The ...