I forgot to mention, when my hen was diagnosed, the cancer was all through her intestines almost exactly like the photos above and in the link I shared When we were discussing her prognosis with the vet, she said that it (tumors) often travels like this and is inoperable due to becoming so homogenized with their intestines and sometimes nearby organs. My poor girl had gone off her food, and food was her favorite thing in the world, so we knew it was time to euthanize her, RIP.