I have had breast cancer Er+ and Her2+. and just finished my herceptin and am still on Tamoxifen. I am not BRCA +.I recently had a lot of abdominal crampy pain, bloating, constipation, diarrhoea. I had a CT scan which indicated Ovarian Cyst of 5cm. I then had sever abdo pain, constipation, diarrhoea and vomiting. Redflagged to Gynae who checked tumour markers and done MRI pelvis. MRI has indicated that the cyst has bled and is now smaller so it should settle...fingers crossed!! However tumour markers CA125 and CEA are normal but CA19.9 is elevated at 53 and now 59. I have read some literature on CA19.9 and mucinous ovarian tumours and my consultant said that if bloods continue to be abnormal that they will need to do a laparoscopy to determine if it is mucinous. What could be causing this elevation. After having already been diagnosed with Breast cancer at 35 im sure you can appreciate my concern.