Spread to large bowel?

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Hello, can anyone please help me?

I am currently having treatment for Endometrioid Ovarian and Uterine Cancer.

Diagnosed August 2024

Ascites drained, full hysterectomy, ovaries, omentum, appendix, cervix, liver scrape and diaphragm scrape. Deposits on peritoneum removed. Sept and Nov 2024.
Six cycles of chemo ended in April 2025, now in remission and taking Niarparib chemo maintenance tablets. 

Before my ovarian cancer I was also referred to Gastro team as positive fit test and blood in stool. 
Colonoscopy in Nov 2024 showed a laterally spreading polyp in my rectum of 3 cm. (LST-Gm) This appeared benign but could not be snared out so treatment put on hold until after chemo.

Fast forward to August 2025 when another colonoscopy showed the polyp had grown from 3cm to 8cm. No worrying signs. 

I am due to have this polyp removed by ESD soon but am not convinced that this polyp isn’t cancerous. MRI scan showed nothing other than polyp.
Everything I’ve read about polyps says they take years to grow so why has mine grown to a giant size in a few months?

Has anyone experienced similar diagnosis and can offer any reassurance as I’m going out of my mind with worry. 

Sorry for long post and thanks for bearing with me xxx

  • Hi  and welcome to the ovarian group.

    I had a different gynaecological cancer, but noticed your post hasn’t had an answer yet, so I hope my reply will give it a nudge to the top of the list again where someone might be able to help. I don’t think I’ve read of anyone in a similar situation in this group, but someone may see your post who can respond. 

    You've been through a lot already, and I appreciate that having another concern to deal with is a lot. I’ve had extensive pelvic surgery myself, although I’ve not experienced a bowel polyp. 

    The fact that there were no worrying signs when the polyp was discovered is a positive to take from things. Polyps can grow to be large, but this doesn’t mean they are malignant, and once it is removed it will be analysed in the lab to be certain of its makeup. 

    It’s hard not to worry, but the only answers will come after the polyp removal, so please try not to let your thoughts run away with themselves just yet. Hopefully it will be a benign growth as it appeared to be, and you’ll be able to let us know how you get on.

    Sarah xx


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