In various published reports of symptomatic PHT with CDC, PHT actually resolved after excision of cyst and hepaticojejunostomy and the children were asymptomatic during subsequent follow-up.[ 1 2 ] In this cohort of patients, although all patients remained asymptomatic after successful surgery of the CDC cyst, the range of NO levels at 1 month, 3 months, and 6 months follow-up helped to identify the patients with persistently elevated NO levels thereby indicating persistently elevated PP.