My son, 10yr old, 4wks ago had haemoptysis, 600mls, 2 days later 200mls, 2 days later 100mls. Univentricular, Tricuspid Atresia, fenestrated TCPC, SPO2 mid 80s %. Warfarin & lisinopril. Normal obs, TXA, Stopped Warfarin, now on Aspirin. Developed chest infection post haemoptysis. No diagnosis as yet! Lots of arterial collaterals. Planned closure of fenestration in next month. No brochoscopy. No CT angiography.