Junctional Parenchyma, Junctional
Parenchymal Defect,
and Septum of Bertin [PDF]

References:

1) Yeh HC. Some Misconceptions and Pitfalls in Ultrasonography. Ultrasound Quarterly 2001;17(3):129-155 [PDF]

2) Yeh HC, Halton KP, Shapiro RS. Junctional Parenchyma: Revised Definition of Hypertrophic Column of Bertin. Radiology
1992;185:725-732 [PDF]