title: Fetal head shape in spina bifida in the second trimester.
abstract: Unequivocal narrowing of the anterior cranium, with an apparent constriction in the approximate region of the coronal sutures, in the absence of oligohydramnios is presented as a warning sign of spina bifida in the second trimester fetus. It makes detailed assessment of the spine, cerebellum, and other ultrasonographic features imperative and may justify amniocentesis.
mesh_terms: D005260:Female; D006257:Head / Q000002:abnormalities*; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis; D016136:Spina Bifida Occulta / Q000175:diagnosis*; D014463:Ultrasonography