The thickness of the adrenal glands is normally up to 1.0 cm.<ref>{{cite journal|url=http://www.medscape.com/viewarticle/543510_2|title=CT and MRI of Adrenal Masses|author=Antonio Carlos A. Westphalen and Bonnie N. Joe|journal=Appl Radiol|year=2006|volume=35|issue=8|pages=10–26}}</ref>