Hello Sploran and thanks for posting, 

I am not sure if explaining the terms will help all that much. Unilocular means there is one chamber in the cyst, sometimes there can be more. Hypoechoic means there are few and hyperechoic means there are lots of echoes coming back to the ultrasound probe - the echos reflect how dense the tissue is. And the pouch of Douglas is a space between the rectum and the womb where fluid can sometimes build up. I think the irregularities are probably the projection and the small amount of fluid, so these need to be looked into further.

It is standard to assess certain features seen in ovarian cysts and there is a scoring system that is commonly used to decide if there is anything to be concerned about. This takes into account CA-125 levels in the blood and whether or not someone has gone through the menopause.

I realise that having an urgent 2 week cancer referral is unsettling, most people find waiting and not knowing is stressful. But do your best to keep an open mind. Ovarian cysts aren't unusual and in many cases turn out to be non cancerous. 

Give us a ring if you want to talk anything over. Our number is Freephone 0808 800 4040 and we are around from 9-5, weekdays.

Best wishes,

Julia