Which one is the gall bladder?

This 7-year-old MN DSH cat presented for progressive anorexia and moderate SAP, ALT, and bilirubin elevations. Dehydration, poor body score, and icterus was noted on the physical exam. The portal hepatis presentation shows a distended viscous with a large amount of debris adjacent to a relatively normal appearing gall bladder. Other structures include the stomach with a minor retention of force-fed canned food 2 hours prior (mid upper right), common bile duct with minor distention (middle of screen) and portal vein (mid bottom). This is a "dual gall bladder" presentation (1 true and 1 remnant) in which the most ventral (upper) was diagnosed at surgery and histopathological review as a gall bladder remnant with mucocele. Lymphocytic cholangiohepatitis was also present. Rusty responded well to cholecystectomy and supportive care and was thriving at follow-up.