ABSTRACT
BACKGROUND/AIM: This study evaluated the prognostic significance of preoperative neutrophil-to-lymphocyte ratio (NLR) and CD8+ tumor-infiltrating lymphocytes (TILs), and whether preoperative NLR was associated with CD8+ TILs in biliary tract cancers (BTCs). PATIENTS AND METHODS: A total of 154 patients with BTCs who underwent surgery were enrolled in this study. We obtained neutrophil and lymphocyte counts, and calculated NLR from preoperative peripheral blood samples. CD8+ TILs were identified by immunohistochemical staining. RESULTS: The overall survival (OS) and recurrence-free survival (RFS) of patients with high NLR were shorter than those with low NLR. The OS and RFS of patients with high CD8+ TILs were longer than those with low CD8+ TILs. Preoperative NLR and CD8+ TILs were negatively correlated. CONCLUSION: NLR and CD8+ TILs were associated with OS and RFS in BTCs. NLR can predict CD8+ TILs infiltrating the cancer microenvironment.
Subject(s)
Biliary Tract Neoplasms/immunology , CD8-Positive T-Lymphocytes/immunology , Lymphocytes, Tumor-Infiltrating/immunology , Lymphocytes/immunology , Neutrophils/immunology , Aged , Female , Humans , MaleABSTRACT
AIM: A meta-analysis was conducted to evaluate and compare the short- and long-term outcomes of laparoscopic and conventional open surgery for gastric gastrointestinal stromal tumors (GISTs). MATERIALS AND METHODS: We searched MEDLINE, EMBASE, Science Citation Index, and the Cochrane Controlled Trial Register for relevant articles published between 2000 and July 2013 by using the search terms "laparoscopic", "laparoscopy-assisted", "surgery", "gastrointestinal tumor", "GIST" and "gastric". RESULTS: We identified 12 articles reporting results that compared laparoscopic surgery with open surgery for gastric GISTs. Our meta-analysis included 644 patients with GISTs; 312 had undergone laparoscopic surgery, and 332 had undergone open surgery. In the short-term period, 14 outcome variables were examined. In the long-term period, six oncological variables were analyzed. Laparoscopic surgery for gastric GIST was associated with a reduction in intraoperative blood loss, shorter period to flatus, earlier resumption of oral intake, and shorter duration of hospital stay over the short-term, and with a significantly lower rate of overall recurrence, metastatic recurrence and local recurrence in the long-term compared to open surgery. CONCLUSION: Laparoscopic surgery may be an acceptable surgical treatment option compared to open surgery for gastric GIST.
