Jaidee, I had a big problem with pseudo cysts that kept coming back. I had one drained and within 6 weeks I had another one causing stomach pain once again. My neuro told me it was due to the scar tissue in my stomach from the shunt related surgeries(there had been 2). He ended up moving my shunt from the stomach to the pleural cavity(Jan 2007) and since then I haven't had any more pain like that.