Woolly hair nevus caused by somatic mutation and Costello syndrome caused by germline mutation in HRAS: Consider parental mosaicism in prenatal counseling.
Liang J, Guo Y, Lu Z, Yu H, Wu L, Yao Z.
J Dermatol. 2022 Jan;49(1):161-164. doi: 10.1111/1346-8138.16177. Epub 2021 Oct 2.