Table 1

Characteristics and antenatal and neonatal events of 21 subjects with frontal horn thin walled cysts

Subject	Gestation (completed weeks)	Birth weight (g)	Sex	Apgar at 5 min	Antenatal problems	Delivery	Neonatal events
A		31		720		M		3	APH 14 weeks, IUGR	Breech	Mild IRDS: ventilated 6 days. Low glucose.
A		31		720		M		3	APH 14 weeks, IUGR	Em LUCS	Exchange transfusion for sepsis
B	28	1470	F	9	PROM IUT for rhesus	Em LUCS	Exchange transfusion for rhesus. Mild RDS: ventilated 4 days
C	33^1-150	1500	M	9	HBP	LUCS	TTN: 2 days
D	31	1700	F	8	APH	Em LUCS	IRDS: high gentamycin levels. Anaemia. Deranged clotting
E	24	845	F	9	APH, gardnerella	SVD	Congenital & acquired pneumonia. Ventilated. Candida
F	27	965	M	9	APH	Em LUCS	Severe IRDS: ventilated, pneumothoraces/PIE/BPD
G	31	1830	M	8	Maternal pyrexia	Em LUCS	Congenital pneumonia: ventilated 24 hours
H	32	1990	M	9	Hyperemesis, HBP	Assisted breech	IRDS: ambient O₂ 5 days. Jaundice, phototherapy
I	42^1-150	3760	F	9	Consanguinous marriage	SVD	Acidosis: inherited pyroglutamic acid
J	30	1550	M	9	APH	Em LUCS	IRDS: ambient O₂ 3 days. Apnoea of prematurity
K	28	1460	M	8	Polyhydramnios	Em LUCS	Severe IRDS: pneumothorax, hypotension/hypoxia
L	30	1510	F	10	APH	Em LUCS	IRDS: ambient O₂ 5 days. Apnoeas
M	34^1-150	2730	M	9	Consanguinous marriage	SVD	Acidosis: ↑ lactate. Fits
N	30	1640	M	9	Rhesus disease. Bradycardia after IUT	LUCS	Ventilated: exchange transfusion ↓ BP
O	26	920	F	8	Twin pregnancy	Em LUCS	IRDS ↓ BP/anaemia & apnoeas. GOR. BPD & PDA
P	32	1750	F	9	Nil	SVD	Mild jaundice. Maternal death after discharge
Q	31	1470	F	8	Twin pregnancy	LUCS	IRDS: ventilated 4 days
R	31	1360	F	9	Twin pregnancy	LUCS	Mild jaundice
S	28	1000	F	7	Twin pregnancy	LUCS	Congenital pneumonia: ventilated 3 days. Twin died Group B streptococcus
T		31		750		F		9	Twin pregnancy	Breech	IUGR/hypoglycaemia
T		31		750		F		9	Twin pregnancy	LUCS	IUGR/hypoglycaemia
U	28	1040	F	9	Maternal drugs	SVD	SVT R_x Digoxin. ASD/PDA
Summary
Subjects
<33 weeks gestation (n=18)	Gestation (weeks)	Birth weight (g)	Sex	Apgar	Antenatal problems	Deliveries
Median	30	1465	7M 11F	9	5 Twin, 6 APH	14 LUCS: 9 emergency
Ranges	(24–32)	(720–1990)		(3–10)

↵1-150 Subjects C, I, M are not included in the summary table.
Em LUCS, Emergency lower uterine caesarean section; IRDS, idiopathic respiratory distress syndrome; APH, antepartum haemorrhage; HBP, hypertension; IUGR, intrauterine growth retardation; PROM, premature rupture of the membranes; IUT, intrauterine transfusion; RDS, respiratory distress syndrome; ambient O₂; GOR, gastro-oesophageal reflux; BPD, bronchopulmonary displasia; PDA, patent ductus arteriosus; SVT, supraventricular tachycardia; ASD, atrial septal defect.