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Caseous necrosis in the kidney. In caseous necrosis no histological architecture is preserved (unlike with coagulative necrosis). [5] [6] On microscopic examination with H&E staining, the area is acellular, characterised by amorphous, roughly granular eosinophilic debris of now dead cells, [6] also containing interspearsed haematoxyphilic remnants of cell nucleus contents. [5]
Focal necrotizing vasculitis, necrotizing granulomas in the lung and upper airway, necrotizing glomerulonephritis: Granulomatosis with polyangiitis: Hakim Triad [1] (Adams Triad) Urinary incontinence, Gait disturbance, Dementia: Normal pressure hydrocephalus: Triad (Triad of Sandblom) Malena, Obstructive jaundice, Biliary colic: Hemobilia ...
Lethal midline granuloma (LMG) is an historical term for a condition in which necrotic and highly destructive lesions develop progressively in the middle of the face, principally the nose and palate. Many cases presented with ulcerations in or perforations of the palate.
These granulomas are the main reason for the name granulomatosis with polyangiitis, although it is not an essential feature. Nevertheless, necrotizing granulomas are a hallmark of this disease. However, many biopsies can be nonspecific and 50% provide too little information for the diagnosis of GPA.
Pulmonary tuberculosis characterized by granulomatous inflammation with necrotizing epithelioid granulomas. Category: Histopathology of pulmonary tuberculosis Aspergilloma of lung: This ectatic bronchus is filled with a colony of Aspergillus. The organisms are confined to the lumen of the bronchus and do not invade surrounding tissues.
Eosinophilic granulomatosis with polyangiitis consists of three stages, but not all patients develop all three stages or progress from one stage to the next in the same order; [7] whereas some patients may develop severe or life-threatening complications such as gastrointestinal involvement and heart disease, some patients are only mildly affected, e.g. with skin lesions and nasal polyps. [8]
A giant cell (also known as a multinucleated giant cell, or multinucleate giant cell) is a mass formed by the union of several distinct cells (usually histiocytes), often forming a granuloma. [1] Although there is typically a focus on the pathological aspects of multinucleate giant cells (MGCs), they also play many important physiological roles.
Necrobiotic granuloma is described as aggregation of histiocytes around a central area of altered collagen and elastic fibers. Such a granuloma is typically arranged in a palisaded pattern. [2] It is associated with necrobiosis lipoidica and granuloma annulare. Necrobiosis differs from apoptosis, which kills a damaged cell to protect the body ...