I have never even heard of so many radiation treatments. And since I've been very open about my cancer, I have talked with a lot of cancer survivors. After my lobectomy, it turned out the cyst was so close to the cut line, that it stained positive for cancer. That took 33 sessions. I don't remember my father-in-law's cyst's exact size, but it was small enough to solely be treated by radiation which I've heard means less than 1 cm. in diameter. He went for five days in a row. They always want to do it on consecutive days, but I had weekends off which I understand is also standard practice. I see no reason that a small cyst would take a lot of treatments.

I had a 3.2 cm diameter cyst removed from my brain and that was followed by five radiation treatments.