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Common variant, usually produces a wedge shaped hyperechoic defect on the anterior aspect near the junction of the upper and mid third of the kidney
junctional parencymal defect
Double layer of renal cortex folded toward the center of the kidney producing a mass effect
Hypertrophied Column of Bertin
Excessive fatty infiltration of the renal pelvis; renal sinus is enlarged and echogenic
Renal Sinus lipomatosis
When the renal pelvis lies outside the renal sius; the pelvis ballons before it reaches the sinus
Infolding of the reaml cortex; sharp clefts seen overlying columns of Bertin
Fetal Lobulation/ Lobation
Existing healthly nephrons enlarge allowing performance of more work; diffue large kidney
Most common congential anomaly of the urinary tract; Either 2 ureters and 2 orifices (complete) or ureters join and enter bladder through single orifice (incomplete)
Duplex Collecting Systems
Cystic dilatation of intramural portion of ureter; SONO: round cyst like structure within bladder
Nonobstructive enlargment of calyces, usually unilater; SONO: enlarged clubbed calyces,
Results from functional ureteric obstruction causing fusiform dilation of distal ureter
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