Korean J Obstet Gynecol.  2003 Jul;46(7):1445-1452.

Three Cases of Spina Bifida by Antenatal Ultrasonogram

• Kim MJ
• Kim MK
• Park HJ
• Seol HJ
• Shin JH
• Kang MJ
• An HS

Abstract

The prenatal diagnosis of spina bifida includes the combined use of maternal serum alpha-fetoprotein (MSAFP) screening and fetal sonography. On ultrasonogram, spina bifida is characterizd by visualization of the spinal defect and associated cranial abnomalities: the Lemon sign, the Banana sign, ventriculomegaly, small biparietal diameter, and obliteration of the cisterna magna. We should now be able to rely on ultrasound as the main technique for diagnosis of spina bifida when MSAFP is elevated. Recently, we have experienced three cases of spina bifida diagnosed with meningomyelocele, lemon sign, banana sign and ventriculomegaly on ultrasonogram at respectively 18+3, 18, and 18+6 weeks of gestation. We present these cases with a brief review of literatures.

Keyword

Spina bifida; MSAFP; Lemon sign; Banana sign; Meningomyelocele

MeSH Terms

alpha-Fetoproteins
Cisterna Magna
Diagnosis
Mass Screening
Meningomyelocele
Musa
Pregnancy
Prenatal Diagnosis
Spinal Dysraphism*
Ultrasonography*
alpha-Fetoproteins