Hemangiosarcoma is a highly aggressive vascular tumour in dogs with very poor prognosis, and welfare-focused end-of-life decision-making is central to managing this devastating diagnosis.
Hemangiosarcoma confronts owners with one of the most difficult welfare situations in veterinary medicine — a dog that may appear well between bleeds but harbours a rapidly progressive cancer with very limited treatment options. The acute haemoabdomen that often precipitates diagnosis causes severe acute welfare suffering from blood loss, cardiovascular shock, and abdominal distension. Emergency surgery stabilises the immediate crisis but does not address the underlying malignancy. Quality-of-life assessment must be conducted honestly and regularly throughout the post-diagnosis period — dogs may have weeks of reasonable welfare between episodes, but the cumulative trajectory is invariably downward. Euthanasia before the next haemoabdomen crisis, while the dog still feels well, is an increasingly recognised welfare-positive choice that owners deserve support in making.