Examples of Mongolian Spots
c: Common Mongolian spots
  These will disappear within 10 years.
d: Deep blue Mongolian spots
  In these pictures all deep blue spots are ectopic and may become persistent Mongolian spots which remain until adulthood.
e: Ectopic Mongolian spots,
   aberrant Mongolian spots
  In these pictures all spots are thin and will disappear in within a few years.
The green triangle indicates the so-called ‘hot spot’ of Mongolian spots. Most common spots appear in this area. Some other spots may appear in other regions such as the shoulders, upper back, arms, wrists, legs, ankles, lateral abdomen and elsewhere.