Large thrombus entrapped in a patent foramen ovale of the atrial septum, which apparently "disappeared" without embolic events

A 59 year old woman, 12 days after haematoma evacuation for hypertensive right putaminal haemorrhage, suddenly complained of dyspnoea and then collapsed just after she had started to walk. She was admitted to our hospital after cardiopulmonary resuscitation. On admission, the patient was in stable haemodynamic condition. She had a left hemiparesis and was slightly …