The Sonographic Appearance of Acute Focal Pyelonephritis 8 Years Experience

Farmer, Kim D.; Gellett, Laura R.

doi:10.1053/crad.2002.0935

Cited by 43 publications

(17 citation statements)

References 6 publications

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“…CT should not be used routinely in children, but it is helpful in confirming the diagnosis in selected cases, because the initial examination by ultrasonography does not always provide a definitive diagnosis. The sonographic appearance of AFBN is typically described as being echo poor [1], but a recent report revealed it as being echogenic [6]. In our case, the echogenic mass noted on admission subsequently became hypoechogenic.…”

Section: Discussionmentioning

confidence: 60%

Evolution of acute focal bacterial nephritis into a renal abscess

et al. 2004

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Acute focal bacterial nephritis (AFBN) is a localized bacterial infection of the kidney presenting as an inflammatory mass without frank abscess formation, which may represent a relatively early stage of renal abscess. The pathogenesis of AFBN is thought to be hematogenous infection or ascending infection from the lower urinary tract. For the majority of children, the pathogenesis may be related to ascending infection, because pre-existing malformative uropathy, especially vesicoureteral reflux (VUR), is common in pediatric patients. Few clinical reports have demonstrated the evolution of this condition into renal abscess in children. We report a girl with AFBN associated with VUR that evolved into a renal abscess despite appropriate intravenous antibiotic therapy. We undertook serial radiological observation of its evolution. It is important to differentiate AFBN from renal abscess because the management of the two entities may be different, and follow-up studies are indispensable to determine appropriate therapy.

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Section: Discussionmentioning

confidence: 60%

Evolution of acute focal bacterial nephritis into a renal abscess

et al. 2004

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“…Both hypoechogenicity and hyperechogenicity may be observed in pyelonephritis, but neither one has been able to determine acute pyelonephritis when compared with scintigraphic documentation. 5,6,10,11 Thus, it has been concluded that renal sonography is an insensitive test for the detection of acute inflammatory changes of renal cortex and should not be used as the primary imaging tool. 10 However, in a recent study, sonography performed by a trained radiologist with a high-frequency transducer was reported to be as sensitive as scintigraphy in diagnosing acute pyelonephritis.…”

Section: Discussionmentioning

confidence: 99%

Relationship of increased renal cortical echogenicity with clinical and laboratory findings in pediatric renal disease

Kasap

Soylu

Türkmen

et al. 2006

J of Clinical Ultrasound

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“…On ultrasonography, most APN appears normal; however, various findings can be revealed, such as single or multiple hyperechoic areas, kidney enlargement, pelvic wall thickening, hypoechoic areas, and perirenal fat involvement [3]. AFBN is characterized by renal masses without liquefaction on sonography or CT, and it can have either hyperechoic or hypoechoic echogenicity [1,[5][6][7][8]. Rathaus et al reported that 47 of 52 cases of AFBN showed a hyperechoic mass, whereas 5 cases showed hypoechoic [1].…”

Section: Discussionmentioning

confidence: 99%

“…Rathaus et al reported that 47 of 52 cases of AFBN showed a hyperechoic mass, whereas 5 cases showed hypoechoic [1]. Similarly, Farmer et al reported 17 cases; 12 cases were hyperechoic, 3 were hypoechoic, and 2 were mixed [5]. AFBN further progresses to renal abscess, which is the most severe upper UTI [1].…”

Section: Discussionmentioning

confidence: 99%

Serial sonographic findings during progression from acute pyelonephritis to renal abscess: a rare case report

et al. 2016

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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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The Sonographic Appearance of Acute Focal Pyelonephritis 8 Years Experience

Cited by 43 publications

References 6 publications

Evolution of acute focal bacterial nephritis into a renal abscess

Evolution of acute focal bacterial nephritis into a renal abscess

Relationship of increased renal cortical echogenicity with clinical and laboratory findings in pediatric renal disease

Serial sonographic findings during progression from acute pyelonephritis to renal abscess: a rare case report

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