I like to cut from vent to throat and splay out the bird without disturbing the organs so I can assure myself that I did not accidentally tear the esophagus when tube feeding letting feed into the chest cavity. From there I inspect each organ from top down. The heart and liver may have yellow lesions, and the lungs should be pink and clear. Remove the intestines including the gizzard, gut, and cecal pouches laying them out on a towel. Slice the gizzard in half to inspect the contents. I would expect the gut and cecal pouches to be severely tumorous with gross cancerous lesions.