“…The dilatation of the cystic duct, also known as type VI choledochal cyst, is rare in pediatric patients, with only 19 cases reported in the literature searching from a public domain database (PubMed) with the following keywords: choledochal cyst, type VI choledochal cyst, and cystic duct cyst with each possible combination for relevant articles (Table 1 ). [ 3 , 4 , 7 – 17 ] In this case, 1 choledochal cyst was located at the distal cystic duct entering the CBD, and another was located at the CBD. Furthermore, the cystic dilatation distal to the segmental stricture of the CBD was diagnosed to be an abnormal pancreaticobiliary common channel because intraoperative cholangiography (Fig.…”