What does lobar nephronia mean?

Lobar nephronia, also known as acute focal nephritis, refers to an intermediate stage between acute pyelonephritis and renal abscess, and is a focal region of interstitial nephritis. It appears as a wedge of poorly perfused renal parenchyma, without a cortical rim sign.

What causes lobar nephronia?

Acute lobar nephronia (ALN) also known as acute focal bacterial nephritis is “an acute localized non –liquefactive infection of the kidney caused by bacterial infection” ¹. It is considered a midpoint in the spectrum of upper urinary tract infection (UTI) between acute pyelonephritis(APN) and intrarenal abscess.

What are the symptoms of acute lobar nephronia?

Fever, flank pain or back pain are the most frequently encountered clinical characteristics. Imaging modalities used to establish a definite diagnosis of acute lobar nephronia included sonography, computed tomography and nuclear medicine. Uroradiographic findings in this condition can mimic a renal abscess or neoplasm.

What is focal nephritis?

Background: Acute focal nephritis is an inflammatory process of the renal parenchyma affecting principally the cortex of the kidney. It is considered a midpoint in the spectrum of upper urinary tract infections, ranging from uncomplicated pyelonephritis to intrarenal abscesses.

What is Nephronia?

Acute lobar nephronia (ALN) is a severe focal bacterial infection affecting one or more lobules of the kidney and is also termed acute focal bacterial nephritis. Rosenfield et al., first described it in 1979. [1,2] This condition is being increasingly diagnosed as a result of advancement of imaging technology.

How do you get an abscess on your kidney?

A renal abscess can be caused by bacteria from an infection that’s gotten to the kidneys. The bacteria can travel through the blood or in urine backing up into the kidney. In the kidney, the bacteria can spread to the kidney tissue. A renal abscess is not a common disease.

Does pyelonephritis show on ultrasound?

Acute pyelonephritis and acute ureteral obstruction often present with similar clinical and urographic findings. Ultrasound, however, can easily detect the presence of obstruction as well as demonstrate characteristic findings suggestive of acute pyelonephritis, and thus allows differentiation.

Can nephritis be cured?

Although nephritis may not always be curable, proper treatment can keep the condition at bay and protect the kidneys. It is essential to follow the doctor’s instructions carefully to prevent and limit kidney damage. If kidney failure occurs, a person may require dialysis or a kidney transplant.

What is acute focal bacterial nephritis?

Objective: Acute focal bacterial nephritis (AFBN) or acute lobar nephronia represents an acute localized non-liquefactive infection of the kidney caused by bacterial infection. The main manifestations consist of fever, chills, abdominal pain, flank pain, and tenderness and percussion pain of the costoverbral angles.

Can you see pyelonephritis on CT scan?

CT can also show evidence of chronic pyelonephritis including renal scarring, atrophy and cortical thinning, hypertrophy of residual normal tissue, calyceal clubbing or dilatation, and renal asymmetry [2]. However, CT should not be obtained early in uncomplicated cases.

What is Ain kidney disease?

Acute interstitial nephritis (AIN) defines a pattern of renal injury usually associated with an abrupt deterioration in renal function characterized histopathologically by inflammation and edema of the renal interstitium.

What does a kidney abscess look like?

Typically, a renal abscess appears as a well-defined hypoechoic area within the cortex or in the corticomedullary parenchyma. It demonstrates internal echoes within and an associated diffusely hypoechoic kidney due to acute pyelonephritis may be seen. Perinephric collection may also be seen.

What kind of nephritis is lobar nephronia?

Lobar nephronia. Lobar nephronia, also known as acute focal nephritis, refers to an intermediate stage between acute pyelonephritis and renal abscess, and is a focal region of interstitial nephritis. It appears as a wedge of poorly perfused renal parenchyma, without a cortical rim sign. The condition is discussed further as part…

What does acute lobar nephronia ( ALN ) stand for?

Acute lobar nephronia (ALN), also known as acute focal bacterial pyelonephritis, is a focal inflammation and bacterial infection of the kidneys without liquefaction or abscess formation. It is an interim between acute pyelonephritis and kidney abscess. ALN is a radiological diagnosis as clinical symptoms overlap with acute pyelonephritis (APN).

What are the ultrasound findings for focal nephritis?

The following ultrasound findings were evaluated: focal loss of corticomedullary differentiation (one/multiple), focal hyperechogenicity, abscess formation, and diffuse nephromegaly. Fisher’s exact test was used for statistical analysis. Results: Of the 11 patients, 8 had AFBN and 3 had APN.