*'''Spleen''', mainly for size, where 11 cm is a common cutoff. ''Further details: [[Ultrasonography of the spleen]]''
Also, it is generally easy to have a quick glance at the kidneys just to exclude hydronephrosis. ''Further details: [[Ultrasonography of the urinary system]]''
Ultrasonographies of the lower abdomen can generally be focused on the condition requested in the referral.
==Diseases and conditions==