What is the Lilly technique for the surgical treatment of choledochal cysts?

Updated: Jul 01, 2020
  • Author: Emily Tommolino, MD; Chief Editor: BS Anand, MD  more...
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Occasionally, the cyst adheres densely to the portal vein secondary to long-standing inflammatory reaction. In this situation, a complete, full-thickness excision of the cyst may not be possible. In the Lilly technique, the serosal surface of the duct is left adhering to the portal vein, while the mucosa of the cyst wall is obliterated by curettage or cautery. Theoretically, this removes the risk of malignant transformation in that segment of the duct.

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