Prof. Zvyagintseva T.D., Assoc.prof. Chernobay A.I., as. Yaroshenko A.V., prof. Oparin A.G. Kharkiv National Medical University In the article, from the modern standpoint, the pathogenetic and clinical characteristics of PCS as a dysfunction of the sphincter of Oddi are given, the mechanisms for the development of this pathology, the principles of therapy with the inclusion…