I am very sorry for what you or your loved one is going through. I am concerned that this question might be best for a medical professional. I am a certified Research Librarian, but I am not a doctor...My initial research does seem to suggest that there would not be a conflict, but it depends on a number of factors such as if you use a catheter for chemo as well and where that particular catheter is placed.
I'm not finding any indication that this should conflict with chemo. Is there a catheter also used in her chemo process?
I see...I would recommend calling the doctor who provides the chemo and explaining about the side effects of the Herception and just confirming that she can still get chemo...
Meaning the doctor will not do chemo on her while there is fluid in her lungs?
I'm just confused about how I can help you...could you try rephrasing your question, perhaps?
I'm afraid I don't think there's anything I can do to influence the doctor, if the doctor is saying they will not proceed with chemo due to the catheter in the lungs...I would recommend a Second Opinion from a medical professional. You have the right to consult another doctor for a second opinion.
I understand that this must be a very stressful and frustrating situation for you...