Yeah, nothing really worked well enough. This one was freaking so large too. It was insane. It's strange how a person can know exactly what they need but the scans show up negative. Honestly I can't blame the doctors on this. Maybe they are trained in seeing small areas that could be construed as problems, but when I got my MRI's and CT scans it is hard to tell where the parasites are. I am looking specifically for them and I can't tell for the most part. I don't know. It's difficult.