George Jose Valooran1, Shiv Kumar Nair2, Ajith Toms3. 1. Department of Cardiovascular and Thoracic Surgery, Rajagiri Hospital, Kochi, Kerala, India. 2. Department of Cardiovascular and Thoracic Surgery, Rajagiri Hospital, Kochi, Kerala, India shivnairmd@gmail.com. 3. Department of Radiology, Rajagiri Hospital, Kochi, Kerala, India.