Conjugated hyperbilirubinemia after surgery. A diagnosis of Dubin-Johnson syndrome confirmed by genetic testing.

Dubin-Johnson syndrome is a rare benign inherited disorder, caused by mutations in ABCC2 gen, and it is characterized by predominantly conjugated hyperbilirubinemia that can be increased by intercurrent infectious illnesses or surgical procedures. We report the case of a 10 year-old patient who showed, after a surgical procedure for peritonitis due to appendicitis, jaundice and predominantly conjugated hyperbilirubinemia, and he was diagnosed with Dubin-Johnson syndrome by genetic testing.