Table 1 Frequency of prenatal ultrasound MMC diagnosis according to the detection time and the level of lesion.
Level of MMC | Diagnosed | Undiagnosed | Total | ||
|---|---|---|---|---|---|
1st trimester n (%) | 2nd trimester n (%) | 3rd trimester n (%) | n (%) | n (%) | |
Cervical/Cervicothoracic | 0 (0) | 0 (0) | 0 (0) | 5 (100) | 5 (100) |
Thoracic/Thoracolumbar | 2 (6.6) | 2 (6.6) | 8 (26.8) | 18 (60) | 30 (100) |
Lumbar/Lumbosacral/Sacral | 0 (0) | 8 (8) | 13 (13) | 79 (79) | 100 (100) |
Total | 2 (1.4) | 10 (7.4) | 21 (15.5) | 102 (75.5) | 135*(100) |