Sonography of pyonephrosis: a prospective study

Subramanyam, BR; Bn, Raghavendra; Ma, Ben; Lefleur, Richard S.; Rosen, RJ; Horii, S C

doi:10.2214/ajr.140.5.991

Cited by 68 publications

(27 citation statements)

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“…E. coli was the commonest organism cultured from the pyonephrotic kidneys. (7) In the second patient, a 77-year-old male, no internal echoes were noted within the dilated pelvicalyceal system; however, PCN was done and pus for culture and sensitivity demonstrated streptococcus species. USG could not predict the possibility of pyonephrosis, as there were no internal echoes.…”

Section: Pyonephrosismentioning

confidence: 93%

Role of Ultrasound in Evaluation of Retroperitoneal Lesions

Pant¹,

Shukla²,

Ahmad³

2016

jemds

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Section: Pyonephrosismentioning

confidence: 93%

Role of Ultrasound in Evaluation of Retroperitoneal Lesions

Pant¹,

Shukla²,

Ahmad³

2016

jemds

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“…The ultrasound findings of pyonephrosis enumerated previously have included diffuse and gravity-dependent echoes within the pelvicalyceal system [6][7][8], shadowing peripheral echoes secondary to gas from gas-forming organisms [6], and renal collecting system wall thickening [5,9].…”

Section: Discussionmentioning

confidence: 99%

Computed tomography of pyonephrosis

1993

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Computed tomographic (CT) findings of 17 pyonephrotic and 20 uninfected hydronephrotic kidneys were reviewed. Parameters evaluated included: renal pelvic wall thickness (none; grade 1, < or = 2 mm; grade 2, 3-5 mm; and grade 3, > 5 mm), renal pelvic contents, parenchymal, and perirenal findings. All patients underwent subsequent percutaneous nephrostomy within 1 week of CT. Common CT findings suggesting pyonephrosis include increased pelvic wall thickness and more severe perirenal fat changes than are seen in uninfected hydronephrosis. However, for any one patient, these findings are often not diagnostic. The presence of clinical signs of infection with hydronephrosis on CT is a more sensitive indicator of pyonephrosis than most CT findings.

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“…The obstruction can be due to tumor, stricture, sloughed papilla, tumor, or stones. If patients are left untreated, patients may develop loss of renal function and septic shock [11,12]. US features include dilatation of the pelvicalyceal system, internal collecting system fluid-fluid levels, echogenic debris, and occasionally dirty echoes of gas.…”

Section: Pyonephrosismentioning

confidence: 99%