Gastic cancer
Conditions
Sponsors
Peking University International Hospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Patients who underwent curative-intent gastrectomy, including distal, total, or proximal resection, at this institution between January 2015 and October 2025. 2. Histopathologically confirmed diagnosis of primary gastric adenocarcinoma (including signet-ring cell carcinoma), established either preoperatively or postoperatively. 3. Surgical procedure performed using one of the following minimally invasive approaches: robotic-assisted surgery (da Vinci Surgical System), conventional two-dimensional (2D) laparoscopy, or three-dimensional (3D) laparoscopy. 4. Tumor staging classified as AJCC/UICC TNM Stage I–III (8th edition). 5. Availability of complete inpatient medical records and comprehensive surgical documentation.
Exclusion criteria
Exclusion criteria: 1. Emergency surgical intervention (e.g., for gastrointestinal perforation or obstructive massive hemorrhage) . 2. Palliative surgical procedures or diagnostic laparoscopy only. 3. Prior gastrectomy (including cases of remnant gastric cancer). 4. Concurrent malignancy (other than the index cancer under investigation). 5. Intraoperative conversion to open surgery (conversion rate reported separately but excluded from the primary efficacy and safety analyses). 6. Incomplete baseline or perioperative data (specifically, missing operative duration, number of retrieved lymph nodes, or postoperative length of hospital stay).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Total number of retrieved lymph nodes;Incidence of Clavien-Dindo grade = II complications within 30 days after surgery; | — |
Secondary
| Measure | Time frame |
|---|---|
| Time of operation;Intraoperative blood loss;Postoperative hospital stay;Number and positivity rate of positive lymph nodes; | — |
Countries
China
Contacts
Public ContactNing Ning
Peking University International Hospital
Outcome results
None listed