I had cysts on my ovaries after DS was born. They were diagnosed after a u/s after I was admitted to hospital with what they thought was burst appendix! Turns out they were cysts..

I had a 7cm x 6cm one on my right ovary, and a 4cm x 5cm one on my left. By the time they were removed ten days later, the right one was 7.5cm x 7.5cm, and the left one 6cm x 5cm.

Luckily, I haven't had them since.

Best of luck with them (I don't have the syndrome either, just the cysts)