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Table 2 Summary of the CdCS cases with pure terminal 5p deletion from the literature compared to the 6 cases in our cohorta

From: Prenatal diagnosis of cri-du-chat syndrome by SNP array: report of twelve cases and review of the literature

Prenatal ultrasound signs

Previously reported(n = 30)

Our group(n = 6))

Total

Increased NT/NF

2/30

1/6

3/36

IUGR

1/30

0/6

1/36

Aplasia/Hypoplasia of the cerebellum

7/30

2/6

9/36

Abnormality of the cerebral ventricles

7/30

0/6

7/36

Absent/severely hypoplastic nasal bone

2/30

0/6

2/36

Choroid plexus cyst

4/30

1/6

5/36

Single umbilical artery

4/30

0/6

4/36

VSD

3/30

0/6

3/36

Hydrops fetalis

3/30

0/6

3/36

Ascites

3/30

0/6

3/36

Encephalocele

1/30

0/6

1/36

Others

 Abnormal serum markers (β-hCG, PAPP-A)

7/30

1/6

8/36

 AMA without abnormal US finding

3/30

0/6

3/36

  1. -aData collected from the 30 prenatal cases with pure distal 5p deletion from 24 studies (Additional file 1: Table S1). IUGR Intrauterine growth retardation, VSD Ventricular septal defect, AMA Advanced maternal age, US Ultrasound.