Cara sent me several ultrasound pictures with labeled organs: a healthy liver, kidney, and gall bladder and a one of Zipper's cyst which is relatively small, 1.61 cm (not big enough to palpate).
https://www.guinealynx.info/photos/cyst1.jpg
https://www.guinealynx.info/photos/cyst2.jpg
https://www.guinealynx.info/photos/cy-livergb.jpg
https://www.guinealynx.info/photos/cy-leftkidney.jpg
https://www.guinealynx.info/photos/cy-kidneycyst.jpg