Table 1 Demographic Data and Pregnancy Characteristics of Study Population

Age

31.89 (± 4.46)

Singleton

33 (89.2%)

Twin

4 (10.8%)

Gestation week at which “low-lying conus medullaris” was first detected

23.81 (± 3.84)

Spinal anomalies

 Open spinal dysraphism

3 (8.1%)

 Closed spinal dysraphism/Tethered spinal cord

6 (16.3%)

  Dermatomal sinus

1 (2.7%)

  Lipoma

1 (2.7%)

With other foetal structural abnormalities

7 (18.9%)

 Complicated with spinal dysraphisms

2

  Bilateral Ventriculomegaly and bilateral hydronephrosis

1

  Cleft lip and palate

1

 Not complicated with spinal dysraphisms

5

  Absent nasal bone and hyperechogenic bowel^a

1

  Left renal agenesis and ventricular septal defect^a

1

  Anal atresia

1

     Non-visulisation of gallbladder

1

  Short long bones & Foetal growth restriction^a

1

Pregnancy Outcome

 Live birth

30 (81.1%)

 Termination of Pregnancy (TOP)

7 (18.9%)

  Non-spinal abnormality

3

   Absent nasal bone and hyperechogenic bowel^a

1

   Left renal agenesis and ventricular septal defect^a

1

   Short long bones & Foetal Growth restriction^a

1

  Open spina bifida

3

  Genetic abnormality arr[GRCh37]16q24.1(84850607_85984462) × 3

1