Hi,I am Dr. Shanthi.E (General & Family Physician). I will be looking into your question and guiding you through the process. Please write your question below.
I'm 87 years old and have been coughing up yellow phlegm occasionally over the past several days. At least that's when I noticed it. A week ago I had a routine chest xray which showed that my lungs were clear and heart normal size. Any suggestions as to what may be occurring?