Retraction Note to: Updates Surg (2014) 66:135–143 https://doi.org/10.1007/s13304-014-0251-6 and Updates Surg (2015) 67:329 https://doi.org/10.1007/s13304-015-0326-z

A previous Retraction Notice has been published for this article [1]. This is the current Retraction Notice and provides an update to replace the previous Retraction Notice [2].

The original article https://doi.org/10.1007/s13304-014-0251-6 has been retracted upon request of the authors as it contains similarities with paragraphs of a previously published article, "Contrast-enhanced ultrasound of intrahepatic cholangiocarcinoma: correlation with pathological examination. H.-X. Xu et al. Br J Radiol 85:1029–1037 (2012)".

While Prof. Dott. Di Carlo gave verbal consent to the corresponding author to insert his name among the authors, Prof. Dott. Di Carlo did not contribute in any way to the editing of the article and explicitly did not approve the publication.