<prompt> The following features differentiate Rotor syndrome from Dubin Johnsons syndrome EXCEPTLiver in patients with Rotor syndrome has no increased pigmentation and appears normalIn Rotor syndrome, Gall bladder is usually visualized on cholecystographyTotal urinary coproporphyin is substantially increased in Rotor syndromeFraction of coproporphyin I in urine is elevated usually more than 80 of the total in Rotor syndrome  <response>: Ans. d Fraction of coproporphyrin I in urine is elevated usually more than 80 of the total in Rotor syndromeRef: Harrison 18thChapter 303Differentiation between Dubin-Johnson syndrome Rotor syndrome:CharacteristicDubin-Johnson syndromeRotor syndromePigmentation of LiverPigmented cytoplasmic globulesNot seen; normal histologyTotal urinary coproporphyrin excretionNormalIncreasedFraction of coproporphyrin IIII in urine80 of total Q70 of the total QBSP clearanceNormal Q with refluxDelayed Q No reflux 