Mitral valve disease includes conditions affecting the mitral valve, which regulates blood flow between the left atrium and the left ventricle of the heart. It is the most common form of heart valve disease and, if left untreated, may lead to complications such as heart failure.
Mitral Valve Regurgitation
Mitral Valve Regurgitation occurs when the valve does not close completely, allowing blood to flow backward into the left atrium.
Mitral Valve Stenosis
Mitral Valve Stenosis is characterised by narrowing of the valve opening, restricting blood flow into the left ventricle.

Mitral Valve Prolapse
Mitral Valve Prolapse is a common and usually benign condition in which the valve leaflets bulge into the left atrium during valve closure. In most cases, it does not cause symptoms; however, more severe forms may progress to mitral valve regurgitation.
Why Choose LEFKOS STAVROS - The Athens Clinic for Your Heart Care
Our internationally recognized cardiologists and cardiac surgeons provide comprehensive cardiovascular care to the highest clinical standards. From accurate diagnosis to the most advanced treatment options, including cutting-edge Interventional Cardiology and Cardiac Surgery procedures, our multidisciplinary team delivers personalized care tailored to each patient’s needs.
LEFKOS STAVROS – The Athens Clinic adheres to the highest international safety standards and clinical protocols, ensuring exceptional quality of care and a safe healthcare environment for every patient who entrusts us with their health.
Personalized Care, Every Step of the Way
Our physicians, nursing staff, and multidisciplinary support teams are dedicated to providing personalized care throughout every stage of your journey, ensuring the highest standards of comfort, safety, and clinical excellence in a welcoming environment.

Medical Team
Nikolaos Koumallos
Cardiac Surgeon
Director
George Sotiropoulos
Thoracic Surgeon
Director
Konstantinos Toutouzas
Professor of Cardiology
Chief of Cardiology
Leonidas Koliastasis
Consultant Interventional Cardiologist
Athanasios Aggelis
Consultant Interventional Cardiologist
Stylianos Georgiou
Cardiologist
Director
Athanasia Gika
Consultant Anesthesiologist ICU








