Gastric cancer has high incidence and mortality rate. Chemotherapy is the first-line treatment for gastric cancer and has achieved considerable success. However, due to genetic variations and tumor heterogeneity, the effectiveness of chemothrapy drugs varies among different patients. Therefore, accurate assessment of patient’s sensitivity to chemotherapy drugs is crucial for personalized treatment. Gastric cancer organoids serve as effective tools for predicting patient’s sensitivity to chemotherapy drugs. This review summarizes the applications and related research progress of gastric cancer organoids in determining chemotherapy drug sensitivity, discusses the strengths and limitations of organoid models, and proposes outlooks for future research directions, hoping that organoids can provide more effective personalized treatment options and a greater range of drug choices for gastric cancer treatment.

Objective To independently design a protective restraint band used for the interventional catheter bed and to evaluate its application effect.Methods The self-designed restraint belt consisted of a restraint belt body,first movable band and second movable band.A total of 200 patients,who received interventional operation at the Affiliated Run Run Shaw Hospital,School of Medicine of Zhejiang University of China from October 2022 to March 2023,were collected for this study.The patients were divided into the study group(n=100,using the self-designed restraint belt)and the control group(n=100,not using the self-designed restraint belt).The duration of surgical interruption due to patient's factors and the incidence of restraint belt-related adverse events were compared between the two groups.Results The duration of surgical interruption of the study group was(0.26±0.12)min,which was significantly shorter than(1.46±0.50)min in the control group,the difference was statistically significant(t=-23.570,P＜0.01).The incidence of restraint belt-related adverse events in the study group and the control group was 0％and 7％respectively,the difference was statistically significant(x2=6.380,P=0.012).Conclusion The protective restraint band used for the interventional catheter bed can reduce the incidence of restraint belt-related adverse events and improve surgical efficiency.

BACKGROUND: Primary pulmonary lymphoepithelial carcinoma (PPLEC) is a rare form of lung malignancy, accounting for only 0.7% of all lung cancers. It is currently classified as a distinct subtype within squamous cell carcinomas. This study aims to explore the clinicopathological characteristics of PPLEC and its subtypes, with the objective of enhancing understanding and improving diagnostic accuracy for this disease. METHODS: A retrospective analysis was conducted on the clinical, pathological, imaging, and prognostic data of 14 patients diagnosed with PPLEC at the First Affiliated Hospital of Soochow University between February 2019 and June 2023. RESULTS: A total of 14 cases of PPLEC were identified, including 5 cases of the Regaud type, with ages ranging from 33 to 73 years, comprising 2 males and 3 females; and 9 cases of the Schmincke type, with ages ranging from 36 to 79 years, including 4 males and 5 females. Computed tomography (CT) scans consistently demonstrated soft tissue masses or nodular shadows. Reagud type mainly showed peripheral masses and Schmincke type mainly showed central masses. Pathological examination revealed tumor cells exhibiting syncytial-like growth, accompanied by lymphocytic infiltration and stromal fibrosis, with the Regaud type showing well-defined borders combined with granulomatous inflammation, while the Schmincke type exhibited indistinct tumor margins. Immunohistochemistry showed that CK, CK5/6, P40 and P63 were positive, and the Ki-67 index of Regaud type was lower than that of Schmincke type; notably, all 8 cases tested for programmed death-ligand 1 (PD-L1) were positive. Epstein-Barr virus-encoded RNA (EBER) in situ hybridization was positive in all instances. Among these cases, 6 underwent surgical treatment, and 8 received comprehensive therapy; by the end of the follow-up period, all 14 patients remained alive. CONCLUSIONS PPLEC is a rare form of malignant lung tumor associated with Epstein-Barr virus (EBV) infection. The Regaud and Schmincke subtypes display distinct imaging and pathological characteristics. In the early stages of the disease, surgical intervention is the primary treatment method; however, for advanced stages, a multimodal treatment approach is utilized, resulting in a relatively favorable prognosis. Immunotherapy represents a promising and effective treatment modality for patients with middle to advanced stage disease exhibiting high PD-L1 expression levels.
Humans ; Male ; Female ; Middle Aged ; Lung Neoplasms/therapy* ; Aged ; Adult ; Retrospective Studies ; Prognosis ; Tomography, X-Ray Computed

Background and purpose: Radiofrequency ablation (RFA) is one of the effective treatment methods for primary liver cancer and metastatic liver cancer. The purpose of this study was to investigate the risk factors of residual tumor after RFA for hepatic malignancies. Methods:A total number of 302 hepatic malignancies cases with 691 tumors after ultrasound-guided RFA from Jan. 2010 to Mar. 2013 were retrospectively analyzed. Single factor and multi-factor Logistic regression model were used to analyze the risk factors of residual tumor after RFA. Results:Complete ablation cases were 90.07%(272/302) for patients and 91.46%(632/691) for tumors, and the ablation residual rate was 8.54%. Ablation residual rates for tumor ≤3 cm, 3-5 cm and >5 cm in diameter were 6.30%, 9.57% and 28.57%, for tumor close to the intrahepatic vascular and gallbladder were 17.14%and 18.52%, for with and without combination with other local treatments were 7.02%and 13.41%, respectively. Multivariate analysis showed that tumor size>5 cm (P=0.044), proximity to large vessel (P=0.039) and without combination with other local treatments (P=0.001) were independent risk factors for ablation residual. Multivariate analysis showed that tumor near the intrahepatic vascular (P=0.014), single needle RFA (P=0.047) and without combination with other local treatments (P=0.023) were independent ablation residua risk factors for tumors between 3-5 cm in maximum diameter. Conclusion:Ultrasound-guided RFA can achieve satisfactory ablation effect. Tumor close to the intrahepatic vascular, tumor diameter>5 cm and without combination with other local treatment act as the independent risk factors for ablation residual. For tumors between 3-5 cm in diameter, in addition to close to intrahepatic blood vessels and without combination with other local treatment, single needle RFA is also another independent risk factor for ablation residual, and double-needle or multi-needle treatment can improve the ablation efifciency and reduce residual rate.