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Query: UMLS:C0034186 (pyelonephritis)
 6,144 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The causative agent in nonobstructive pyelonephritis has been shown most often to be P-fimbriated Escherichia coli, mainly because receptors for these fimbriae are found in the bladder, ureter, and the kidney tubules. Age and sex are factors leading to differences in the presentation of the disease, and early diagnosis followed by intensive therapy lessens the chance of renal damage. Renal abscess, perinephric abscess, and pyonephrosis all follow pyelonephritis in the host who is compromised by the presence of stone, obstruction, diabetes, or immunosuppression.
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PMID:Pyelonephritis, cortical abscess, and perinephric abscess. 353 6

Renal abscess, accumulation of infective fluid in the kidney, is a rare pathology. Currently, no reports of the serial imaging changes of acute pyelonephritis (APN) progressing to renal abscess exist. We report clinical and serial sonographic findings of a patient with hyper-immunoglobulin E syndrome, a primary immunodeficiency, who developed APN that progressed to renal abscess. Renal ultrasonography revealed that echogenicity of infectious lesions dramatically changed from isoechoic to hyperechoic and to hypoechoic during progression. These findings are useful for differential diagnosis of APN, acute focal bacterial nephritis, and renal abscess.
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PMID:Serial sonographic findings during progression from acute pyelonephritis to renal abscess: a rare case report. 2850 19