Prasanna, ThiruBriggs, GregJain, SanjivYip, Desmond2021-11-161569-9293http://hdl.handle.net/1885/251836Although thoracic ablative therapies are generally safe procedures, fatal complications can occur. Bevacizumab is a standard-of-care treatment along with chemotherapy for metastatic colorectal cancer. Although uncommon, unpredictable serious adverse events can occur secondary to bevacizumab. We report a case of fatal intrapulmonary haemorrhage as a result of arteriopulmonary fistula in a patient after microwave ablation of pulmonary colorectal cancer metastasis while on bevacizumab. Antiangiogenetic properties of bevacizumab are associated with delayed wound healing, which might have been a crucial factor in the development of arteriopulmonary fistula and haemorrhageapplication/pdfen-AU© The Author 2017. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic SurgeryHaemorrhageBronchial fistulaBevacizumabWound healingMassive fatal pulmonary haemorrhage during bevacizumab treatment following microwave ablation therapy for oligometastatic lung metastasis from rectal cancer201810.1093/icvts/ivx3422020-11-23