Objective To reveal the significance of D2-40/CK19 dual immunohistochemistry for micrometastasis of peripancreatic neural plexus in patients with pancreatic cancer. Methods Between January 2006 and January 2007, 44 patients with pancreatic duct adenocarcinoma underwent extended radical resection. Conventional hematoxylin/eosin staining and double immunohistochemical staining using CK19 and D2-40 were used to determine peripancreatic neural invasion and lymphatic vessel invasion (LVI) in peripancreatic neural plexus tissues. Results D2-40 immunohistochemistry showed brown-yellow tube-like lymph vessels. The lymph vessel of peripancreatic nerve plexus followed vascular and perineurium, and the lymph vessel adjacent to peripheral nerve fascicles owned tube-like structure. CK19 immunohistochemistry showed cytoplasm of pancreatic cancer cell was red. The LVI was observed in lymphatic capillaries. Peripancreatic neural plexus invasion was found in 30 cases (68.2%), tumor cell invading presented in lymph vessels of peripancreatic neural plexus in 21 patients (47.7%) with pancreatic cancer. The peripancreatic neural plexus invasion was associated with LVI (P=0.003). The plexus of pancreatic capitalis and celiac plexus were respectively confirmed to be the spot with the highest lymphatic vessel density and the maximal incidence of neural plexus invasion simultaneously. Conclusions Patients with pancreatic cancer should be given the opportunity of radical operation combining related peripancreatic neural plexus as far as possible. The dual immunohistochemical staining with anti-CK19 and anti-D2-40 monoclonal antibodies should be a new method in research of perineural invasion of pancreatic cancer, exhibiting both the pancreatic cancer cells and lymph vessels clearly and distinctly.
ObjectiveThe main objective of this study is to systematically evaluate the efficacy and safety of proximal gastrectomy and total gastrectomy in the treatment of Siewert Ⅱ and Ⅲ adenocarcinoma of the esophagogastric junction. MethodsThis study conducted a meta-analysis using Review Manager 5.4 software to compare the efficacy and safety of proximal gastrectomy and total gastrectomy in the treatment of Siewert Ⅱ/Ⅲ adenocarcinoma of the esophagogastric junction. Databases including PubMed, The Cochrane Library, Web of Science, EMbase, CNKI, Wanfang Data, and VIP were searched for relevant literature published through March 2023. ResultsThis study included a total of 23 articles, among which 16 were retrospective studies, 5 were prospective studies, and 2 were RCT. In total, 2826 patients, 1389 patients underwent proximal gastrectomy and 1437 patients underwent total gastrectomy. Meta-analysis showed that proximal gastrectomy had less intraoperative bleeding than total gastrectomy [MD=-19.85, 95% CI (-37.20, -2.51), P=0.02] and shorter postoperative hospital stay. Total gastrectomy had a higher number of lymph node dissections than proximal gastrectomy [MD=-6.20, 95% CI (-7.68, -4.71), P<0.00001] and a lower incidence of reflux esophagitis [MD=3.02, 95% CI (1.24, 7.34), P=0.01]. In contrast, there was no statistically significant difference between the two procedures in terms of operative time, postoperative OS (1-year OS, 3-year OS, 5-year OS) and total postoperative complications (P>0.05). ConclusionProximal gastrectomy had an advantage in terms of intraoperative bleeding and postoperative length of stay, whereas total gastrectomy had an advantage in terms of number of lymph nodes cleared and incidence of reflux esophagitis, with no significant difference in long-term survival between the two procedures.
Objective To systematically evaluate the efficacy and safety of single and bilateral lung transplantation in the treatment of end-stage chronic obstructive pulmonary disease (COPD). Methods Chinese and English databases were searched by computer, including PubMed, Web of Science, The Cochrane Library, EMbase, CNKI, Wanfang database, VIP database and CBM. Case-control studies on single lung transplantation or bilateral lung transplantation for COPD were collected from the inception to July 31, 2022. We evaluated the quality of the literature via Newcastle-Ottawa Scale (NOS). All results were analyzed using Review Manager V5.3 and STATA 17.0. Results A total of 8 studies were included covering 14076 patients, including 8326 patients in the single lung transplantation group and 5750 patients in the bilateral lung transplantation group. NOS scores were≥6 points. The results of meta-analysis showed that there was no statistical difference in the postoperative 1-year survival between the two groups (P=0.070). The 2-year survival rate (P=0.002), 3-year survival rate (P<0.001), 5-year survival rate (P<0.001), overall survival rate (P＜0.001), postoperative forced expiratory volume in one second/predicted value (P<0.001), postoperative forced vital capacity (P<0.001), and postoperative 6-minute walking distance (P=0.002) were lower or shorter than those in the bilateral lung transplantation group, the postoperative intubation time (P=0.030) was longer than that in the bilateral lung transplantation group. Bilateral lung transplantation group showed better surgical results. There was no statistical difference in the mortality, obliterative bronchiolitis, length of hospitalization, primary graft dysfunction, or postoperative adverse events (P>0.05). Conclusion Bilateral lung transplantation is associated with better long-term survival and postoperative lung function compared with single lung transplantation. In-hospital mortality and postoperative complications are similar between them.