What's your diagnosis in this 8-week fetus?
Images courtesy of Mayank Chowdhury, MD
Umbilical cord cyst
Umbilical cord cysts are thin-walled cystic lesions involving the umbilical cord and can vary in size from 5 to 60 mm. They are nonvascular and may be associated with fetal morbidity and mortality if the cysts persist beyond 12 weeks.