I googled both terms for you.

Chorionitis - yep an infection, and it seems as though the Giardia may be responsible, the ref I read quoted e coli etc as a possible cause for the infection.

Echogenic Bowel - its a 'soft marker' for things like Downs etc which is why they would have tested for CP. Its appears to only be a very small problem and most bubs go on to be ok.

There were no frightening images or anything, just lots of scientific terms and diagrams on a cellular level. I hope this helps a little.

xoxoxoxo