Table 3.

Common single congenital anomalies (CA) per body system involved

Body system	Total number Of CA	Isolated CA		Common isolated anomalies
		No.	%
Cardiovascular	424	265	62.5	Ventricular septal defects in 75 (28.3%). Atrial septal defects in 67 (25.3%). Pulmonary valve atresia and stenosis in 18 (6.8%). Severe CHD in 54 (20.4%)
Urinary	323	229	70.8	Congenital hydronephrosis in 147 (64.2%). Bilateral renal agenesis in 3 (1.3%).
Central nervous	161	68	42.8	Neural tube defects in 32 (47.1%). Encephalocele in 4 (5.9%)
Gastrointestinal	74	33	44.6	Ano-rectal atresia and stenosis in 16 (48.5%). Diaphragmatic hernia in 6 (18.2).
Limb	97	31	32	Total limbs reduction in 9 (29%). Upper limb reduction in 7 (22.6%). Lower limb reduction in 3 (9.7%).
Eye	32	14	43.8	Congenital glaucoma in 6 (42.9%). Congenital cataract in 4 (28.6%). Anophthalmia+microphthalmia in 3 (21.4%).

CHD, congenital heart disease.