Pectoral Nerve (PECS) Blocks in Gynecomastia Surgeries.

This manuscript, a Letter to the Editor, is in response to the recently published research article that compared the effectiveness of pectoral nerve (PECS) block I versus PECS block II in gynecomastia surgeries. A few important concepts that were misconceived by the authors of the original article are discussed here.Level of Evidence V This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .