My dad has thyroid cancer and a trach from the tumor that was removed. Over the last few months he has been getting more fluid in his lungs. We do not know what the cause is coming from. Just wondering if any of you have loved ones or patients that you are taking care of that have this (pleural effusion). And if ya'll know what is causing my dad to have this. Any information would be of help to me. Thank you. Much love to all Stormy