A total of 2,305 consecutive newborns at
Shariati Hospital, Tehran, Iran, and 1,706 at Lolagar
Hospital, Tehran, Iran, were examined for 2 years (2004–
2006). Mongolian spots were found in 11.4% and 37.3%
of newborns at Shariati and Lolagar hospitals, respectively.
The most frequent site of involvement is the
sacral, followed by the gluteal area.
