Umbilical cord cysts diagnosed antenatally present a challenge to the
clinician as they may be associated with adverse perinatal outcomes in
cluding abnormal karyotypes and stillbirths, We present a case of an u
mbilical cord cyst diagnosed by routine ultrasound at 30 weeks of gest
ation. Findings on sonography included unidirectional movement of echo
genic particles suggesting a large varix of the umbilical vein. The pa
tient delivered vaginally at 39 weeks and histopathology confirmed the
diagnosis.