Hi I did review your concern. Your echo report is suggestive of mild tricuspid regurgitation and mild fractional shortening affecting myocardial contractility. It may be due to the chemotherapeutic drugs or prolonged thrombus effect. However, 30 percent is a low value and it can reverse given enough time to heart to heal. i hope this helps. let me know if you have any more questions or concerns. I will be more than happy to help you. Wish you a very healthy life ahead.