It was brought to our attention that the article “Chest Tube Drainage of Transudative Pleural Effusions Hastens Liberation From Mechanical Ventilation” published in the March issue of CHEST (2011;139:519-523) used duplicate data from a 2007 abstract by several of the same authors: “Pigtail Catheter Drainage of Transudative Pleural Effusions Hastens Liberation From Mechanical Ventilation [abstract]” (2007;132:455). After the authors acknowledged that the wrong data set was utilized in the creation of the May 2011 article, an investigation was undertaken by Maimonides Medical Center, the institution at which both works were conducted. The data intended for the May 2011 article was not located. Accordingly, due to its reliance on incorrect data, we hereby retract this article. Further, the 2007 abstract has been retracted under separate notice.