Prenatal Detection of a Cryptic Derivative Chromosome: Association of Ultrasound Findings with an Imprinted Region

Riordan, Christine, MS, CGC; Shafer, Jennifer, MS, CGC; Molinari, Sharon, MS, CGC; Kline, Laura, MS, CGC; Schwartz, Stuart, PhD, FACMG; Papenhausen, Peter, PhD, FACMG