RETRACTED: The long noncoding RNA CASC2 inhibits tumorigenesis through modulating the expression of PTEN by targeting miR-18a-5p in esophageal carcinoma.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the Editor-in-Chief. In the article Figure 3A top and center panel are duplicated and in Figure 5A elements are duplicated from previous publications from the same authors in Tumor Biol. (2014) 35:12583–12592 DOI 10.1007/s13277-014-2579-4 (Figure 3) and Dig Dis Sci (2013) 58:706–714 DOI 10.1007/s10620-012-2395-x (Figure 8). The authors recognize mishandling of these images which affects the validation of the study and would like to apologize to readers.