Right coronary artery aneurysm: an unusual cause of chest pain.

Giant coronary artery aneurysm is an uncommon but well-recognised entity in infants and children with Kawasaki disease. We describe an unusual case of ischaemic cardiomyopathy in an 86-year-old woman owing to giant aneurysm in a dominant right coronary artery discovered with left heart catheterisation and was missed on ECG and nuclear studies. This case highlights the importance of early diagnosis which allows appropriate management. Transcatheter therapy is the main treatment option in this case; however, medical therapy can be used alone with variable results and outcome.