Fetal lobulation, also known as fetal lobation, of the kidney is evident on scanning. Fetal lobation is a normal stage in the development of the kidney.[2] In the adult a normal anatomic variant is that of persistent fetal lobulation of the kidney that may be mistaken for a tumour.[3]
^Page 56 in: Staecker, Hinrich; Thomas R. Van De Water; Van de Water, Thomas R. (2006). Otolaryngology: basic science and clinical review. Stuttgart: Thieme. ISBN0-86577-901-5.