I have an ovarian cyst, left ovary, that started at 2 cm and now is 3-4 cm. I have been to gynecolgic oncologist and he feels it is most probable the tumor is benign. Although my oncologist recommends following up with monthly CA-125 for 3 months, then a repeat transvaginal ultrasound. My original CA-125 test result was 127. 1 month later, is now 148. I am concerned. I also have medullary sponge kidney disease, just diagnosed this summer. My hands have a very dry, itchy rash. I am 45 years old. Any opinions here? Should I wait it out for another 2 months, or seek more aggressive treatment?