To the editor The review article by Díaz del Arco et al1 provides a comprehensive review of the methods used for the surgical removal and gross room retrieval of lymph nodes from gastric carcinoma excisions, TNM staging of gastric carcinoma, and multiple additional histologic features of lymph node metastases used for accurate prognosis of gastric carcinoma. The authors mention methods beyond manual palpation to improve lymph node harvesting, such as fat clearing. Omitted from the comprehensive review is an entirely new method for lymph node harvesting first reported in the United States in 2004.2 This method, currently used more extensively in Germany (the early reports are based on over 700 cases), is the “acetone compression” method for lymph node retrieval.3-5 The acetone compression method decreases adipose tissue volume through dissolving fat in fat solvents (elution) and extracting the dissolved fat with compression. Tissue volume is decreased up...