Module 7.1 : Renal Variants

Question 1

dromedary hump

Answer 1

• lateral aspect of LEFT kidney
• thickening or bulging of cortex
• visualize CM to rule out mass

Question 2

hypertrophied column of Berlin

Answer 2

• 2 layers of cortex between pyramids
• upper/middle portion of kidney
• indents renal sinus
• should not measure >3cm
• isoechoic to and continuous with cortex

Question 3

fetal lobulation

Answer 3

• infolding of cortex but no thinning
• SCALLOPED
• identified in 51% of adults

Question 4

junctional parenchymal defect

Answer 4

• incomplete embryological fusion
• typically right side
• wedge shaped hyper echoic
• anterior superior cortex
• can be confused with scarring