Synonyms
Focal acute pyelonephritis with abscess formation; Intrarenal abscess; Renal corticomedullary abscess; Suppurative fluid collection
Definition
Renal abscess is defined as a parenchymal fluid‐filled mass of infectious origin containing suppurative material and delineated by a pseudocapsule.
Pathology—Histopathology
Abscess formation results from ascending lobar bacterial infection or hematogeneous spread of bacteria from extrarenal primary source of infection (skin, teeth, heart valve) especially in patients known to be immunocompromised or in patients known to abuse IV drugs. At an early stage, before frank abscess formation, severe acute focal nephritis causes interstitial inflammation with polymorphonuclear leukocytes infiltration, tubule obstruction and vasoconstriction that lead to focal ischemia and liquefaction. Frank abscess formation is responsible for a cortiomedullary or cortical mass filled with fluid pus and delineated by a pseudocapsule due to compressed...
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© 2008 Springer-Verlag Berlin Heidelberg New York
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Hélénon, O., Correas, J. (2008). Abscess, Renal. In: Baert, A.L. (eds) Encyclopedia of Diagnostic Imaging. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-35280-8_13
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DOI: https://doi.org/10.1007/978-3-540-35280-8_13
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-35278-5
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