Distal monosomy 10q is a chromosomal anomaly involving terminal deletion of the long arm of chromosome 10 and is characterized by facial dysmorphism, pre- and postnatal growth retardation, cardiac and genital anomalies, and developmental delay. The disease is distal 10q deletion syndrome (MONDO_0012315). Also known as: chromosome 10q26 deletion syndrome, distal deletion 10q, distal monosomy 10q, distal monosomy type 10q, monosomy 10qter, telomeric deletion 10q, terminal chromosome 10q26 deletion syndrome.