Large, mobile, transmitral metastastic osteosarcoma presenting as cardiac arrest.

Unlabelled: The present case is an unusual one of a 21-year-old female with a primary osteosarcoma and left lung metastasis presenting following a witnessed pulseless electrical activity cardiac arrest. The electrocardiogram was unremarkable. A computed tomography pulmonary angiogram (CTPA) demonstrated a tumour within the left inferior pulmonary veins.