This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
A 10 year old female presents with pain in the right hypochondrium, fever, jaundice and palpable mass in the right hypochondrium. The probable diagnosis is 
Select and explain. 
A. Hepatitis, B. Hepatoma, C. Choledochal cyst, D. Mucocele gallbladder
C: Choledochal cyst
Answer: C: Choledochal cyst 
Explanation: Choledochal cyst Cystic dilation of the biliary ducts, more common in females Clinical features. Classical triad : Pain, jaundice (intermittent) & abdominal mass(10%). Most common symptom in infants : Jaundice (in 80%) Most common symptom in patients >2 years of age : Abdominal pain. In children, the major clinical symptoms are recurrent abdominal pain (81.8%), nausea & vomiting (65.5%), mild jaundice (43.6%), an abdominal mass (29%), and fever (29%) In adukts, abdominal pain (87%), and jaundice (42%), and present frequently. Less common clinical findings include nausea (29%), cholangitis (26%), pancreatitis (23%), and an abdominal mass(13%) Ref: Sabiston 20th edition Pgno :1511