Integrated analysis of comorbidity, pregnant outcomes, and amniotic fluid cytogenetics of fetuses with persistent left superior vena cava

Table 3 Specific types of extracardiac structural abnormalities in 97 cases of persistent left superior vena cava, n (%)

Type of extracardiac structural abnormalities	n (%)
Single umbilical artery	9 (24.3)
Persistent right umbilical vein	6 (16.2)
urinary system abnormalities	6 (16.2)
Neurological system abnormalities	3 (8.1)
Pleural effusion	2 (5.4)
Pulmonary cystadenoma	2 (5.4)
Absence of nasal bone	2 (5.4)
Gallbladder abnormalities	2 (5.4)
Situs inversus	1 (2.7)
Scoliosis	1 (2.7)
Multiple malformations	3 (8.1)
Total	37 (100)