Inclusion Criteria:  Patients at least 18 years old at enrolment With a LVT identified at echocardiography, MRI or CT between January 1st, 2013 and July 31st, 2020 Treated at least once at the Inselspital or in another site of the Insel Gruppe Able to provide a written informed consent  Exclusion Criteria:  Documented refusal