Hi am very curious to know if this has happened to anyone else. My 19mm AN had two cystic components evident on first and planning MRI. Yesterday I got the results on my second MRI follow up after 18 months - bit more shrinking and now off the brainstem - and NO cysts visible. I had specifically asked for a focus on this aspect as always nervous re the unpredictability of cystic in the literature. My specialist Professor Joseph here in Perth who has about 30 years experience as a radiologist oncologist told me that my body is healing well and confirmed what the MRI report had mentioned twice - no cysts are now visible. Am really thrilled but also amazed. It seems the treatment has caused them to rupture or be absorbed.