Histology and Explanation of acute PyelonephritisAcute pyelonephritis is an exudative purulent localized inflammation of kidney and renal pelvis. The renal parenchyma presents in the interstitium abscesses (suppurative necrosis), consisting in purulent exudate (pus): neutro… Read More
Histology and Classification of TumorsNeoplasia (tumors) are abnormal tissue proliferations, which develop exceeding normal tissue, uncoordinated with it. This uncontrolled tissue growing may continue even after cessation of the etiologic factor (self-maintaine… Read More
Histology and Explanation of Squamous cell PapillomaSquamous cell papilloma (verruca vulgaris) is a benign epithelial tumor. Tumor cells proliferate and produce finger-like or warty projections; secondary, the subjacent vessels and connective tissue (fibrovascular core) grows … Read MoreHistology and Explanation of Chronic InflamationChronic inflammation is a long lasting inflammation (weeks or months) due to persistent aggressive stimuli and is characterized by: active inflammation with mononuclear cells, tissue destruction and repair. It can follow ac… Read More
Histology and Explanation of Brain abscessAbscess is an exudative purulent localized inflammation. In the white matter, a recent abscess consisting in pus : neutrophils (normal or in lisis), fibrin, necrotic debris, germs. Vessels present congestion and important per… Read More
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