Medicine

The following features differentiate Rotor syndrome from Dubin Johnson's syndrome except:

Liver patients with Rotor syndrome has no increased pigmentation and appears normal

In Rotor syndrome, gall bladder is usually visualized on cholecystography

Total urinary coproporphyrin is substantially increased in Rotor syndrome

Fraction of coproporphyrin I in urine is elevated usually more than 80% of the total in Rotor syndrome