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Renal abscess - PowerPoint PPT Presentation


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Renal abscess. Introduction. Abscess in the renal parenchyma Also known as the carbuncle of the kidney Etiology: Staphylococcus aureus: released from distance sources Injury to the kidney E. coli. Clinical features. Symptoms: fever, chills, loin pain Signs:

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Presentation Transcript
introduction
Introduction
  • Abscess in the renal parenchyma
  • Also known as the carbuncle of the kidney
  • Etiology:
    • Staphylococcus aureus: released from distance sources
    • Injury to the kidney
    • E. coli
clinical features
Clinical features
  • Symptoms: fever, chills, loin pain
  • Signs:
    • extreme tenderness over the affected kidney
investigations
Investigations
  • Blood: elevated WBC
  • Urine:
    • usually negative in the early stages
    • Pus cells & bacteria if the abscess ruptures into the renal pelvis
  • Straight X- ray: enlarged kidney
  • IVU: space occupying lesion obliterating or compressing a group of calyces &/ or a part of the pelvis of the ureter
slide5

36-year-old man with left renal abscess. Longitudinal gray-scale sonogram of left kidney shows well-defined hypoechoic mass (arrow) near mid region of kidney.

slide6

Nonenhanced CT scan through the mid pole of the right kidney demonstrates right renal enlargement and an area of decreased attenuation

slide7

A, Enhanced CT scan shows an irregular septated low-density mass (M) extensively involving the left kidney.

Note thickening of perinephric fascia) and extensive compression of the renal collecting system. Findings are typical of renal abscess.

B, Ultrasound longitudinal scan demonstrates a septated hypoechoic mass (M) occupying much of the renal parenchymal volume

treatment
Treatment
  • Antibiotics
  • Surgical drainage
  • Nephrectomy
introduction1
Introduction
  • Abscess between the renal capsule & the perirenal fascia of Gerota
etiology
Etiology
  • Primary: hematogenous
  • Secondary:
    • Infection travels from neighboring organs
    • Usually follows renal abscess
    • Infection of a perirenal hematoma
clinical features1
Clinical features
  • Symptoms: typical history of prolonged urinary infection, fever, pain in the flank
  • Signs: fever, marked tenderness over the kidney, scoliosis of the spine
investigations1
Investigations
  • Blood: leukocytosis, anemia
  • Urine:
    • Pyuria & bacteriuria
  • Straight X- ray:
    • Obliteration of the renal & psoas shadow
    • Scoliosis of the spine
  • IVU: Mathe’s sign
  • Isotope scanning
treatment1
Treatment
  • Antibiotics
  • Surgical drainage