The changing clinicopathological pattern of abscesses in or adjacent to the kidney.

We reviewed retrospectively 43 patients with various renal and perirenal abscesses. In contrast to previously published data a primary renal etiology was noted for nearly every abscess in or adjacent to the kidney, irrespective of the type of abscess. Currently, the concept that the renal carbuncle is a metastatic abscess whose origin lies at some distant site may be applicable no longer. Despite earlier recognition of symptoms, improved diagnostic techniques and better therapy the morbidity and mortality of abscesses in and adjacent to the kidney remain high, suggesting the important role of associated medical conditions and the need for early aggressive therapy.