Approximately 1% of the general population has a lipoma. Although they can occur at any age, they are most common between 40 and 60 years of age.[5]Salam GA. Lipoma excision. Am Fam Physician. 2002 Mar 1;65(5):901-4.
https://www.aafp.org/pubs/afp/issues/2002/0301/p901.html
http://www.ncbi.nlm.nih.gov/pubmed/11898962?tool=bestpractice.com
Congenital lipomas have been reported in children.[6]Lellouch-Tubiana A, Zerah M, Catala M, et al. Congenital intraspinal lipomas: histological analysis of 234 cases and review of the literature. Pediatr Dev Pathol. 1999 Jul-Aug;2(4):346-52.
http://www.ncbi.nlm.nih.gov/pubmed/10347278?tool=bestpractice.com