Table 3.
Diagnostic test results of prenatal MR single signs in suspicious CDC cases.
| MRI sign of CDC | Prenatal MRI | Postnatal | ||||
|---|---|---|---|---|---|---|
| Sensitivity | Specificity | Diagnostic compliance | Sensitivity | Specificity | Diagnostic compliance | |
| Sign A: the cyst was located at the porta hepatis | 100% (14/14) | 25% (1/4) | 83.3% (15/18) | 76.9% (10/13) | −(0/2) | 66.7% (10/15) |
| Sign B: the end of the cyst is higher than the lowest edge of the liver | 92.9% (13/14) | 50% (2/4) | 83.3% (15/18) | 38.4% (5/13) | −(0/2) | 33.3% (5/15) |
| Sign C: parallel to the hepatoduodenal ligament | 100% (14/14) | 25% (1/4) | 83.3% (16/18) | 23.0% (6/13) | −(0/2) | 40% (6/15) |
| Sign D: the cyst was connected to the hepatic ducts | 100% (14/14) | 50% (2/4) | 88.9% (16/18) | 100% (13/13) | −(0/2) | 86.7% (13/15) |
| Sign E: the cyst was connected to the GB/duct of GB | 100% (14/14) | 25% (1/4) | 83.3% (15/18) | 100% (13/13) | −(0/2) | 86.7% (13/15) |
| Sign F: dilated intrahepatic bile ducts (left and right hepatic ducts) | −(0/14) | 75% (3/4) | 16.7% (3/18) | 30.1% (4/13) | 50% (1/2) | 33.3% (5/15) |
| Tapered sign: coronal T2-weighed image showed the choledochal cyst's tapered ends | 21.4% (3/14) | 75% (3/4) | 33.3% (6/18) | 7.7% (1/13) | 50% (1/2) | 13.3% (2/15) |