The following features differentiate Rotor syndrome from Dubin Johnson's syndrome EXCEPT
Ans. (d) Fraction of coproporphyrin I in urine is elevated usually more than 80% of the total in Rotor syndrome(Ref: Harrison 18th/Chapter 303)Differentiation between Dubin-Johnson syndrome & Rotor syndrome:CharacteristicDubin-Johnson syndromeRotor syndromePigmentation of LiverPigmented cytoplasmic globulesNot seen; normal histologyTotal urinary coproporphyrin excretionNormalIncreasedFraction of coproporphyrin I/III in urine>80% of total Q<70% of the total QBSP clearanceNormal Q with refluxDelayed Q No reflux