Hi there. My dad has recently been diagnosed with pleural mesothelioma. He has recently started immunotherapy and I am struggling to understand how progress is monitored. He last had a PET Scan in September. Since then, he has become more symptomatic and experiencing difficulties with breathlessness. He has not been rescanned prior to starting treatment and his first follow up is in April.
I am hoping someone can explain how oncology assess whether the treatment is working? I had assumed he would be rescanned shortly before the treatment to give an up-to-date position to measure against. I am worried that any progression between diagnosis and starting treatment has not been captured.
Thanks in advance.
