Fetal cervical hyperextension.
D005333:Fetus / Q000000981:diagnostic imaging*; D006801:Humans; D009421:Nervous System Malformations; D011859:Radiography; D013116:Spinal Cord / Q000002:abnormalities*; D013122:Spinal Diseases; D013131:Spine / Q000002:abnormalities*
FETUS/radiography; SPINAL CORD/abnormalities; SPINE/abnormalities