Background: Laparoscopic gastrectomy cannot be performed routinely in many centres, because there is still no standardisation in the centres where it is performed, and therefore, new learning areas are needed for residents working in these centres for surgical training. These areas are various courses, video training sets and video platforms watched over the internet. The most frequently used platforms are YouTube^® and WebSurg^®. Our aim is to compare these two online video platforms in terms of laparoscopic gastrectomy and to evaluate the contribution of video platforms to surgical training and whether they have sufficient technical quality. Materials and Methods: We made a search on YouTube^® and WebSurg^® using the keyword 'laparoscopic gastrectomy' on 13 November 2020. A total of 143 videos were analysed, 111 of them on YouTube^® and 32 on WebSurg^®. All these videos were examined by two surgical oncologists experienced in laparoscopic gastrectomy and using laparoscopy in their daily practice. Results: The average video duration was 53.54 min in the YouTube^® group and 18.20 min in the WebSurg^® group, and this difference was found to be statistically significant between the two groups. According to the LGSS based on surgical procedures, the average score of WebSurg^® videos was 10.37 and of YouTube^® videos was 5.55, and there was a statistically significant difference between the two groups. Conclusions: Today, video platforms have started to play a major role in surgical training. Of these platforms examined, WebSurg^® is superior to YouTube^® in terms of education and quality, but these platforms still have some deficiencies and need regulation.

Aim: There are very few studies in the literature investigating the changes caused by the Nathanson retractors in liver function tests (LFT) after LG and its clinical significance. The present study investigated the changes made by the Nathanson retractor used during LG on LFT and its clinical significance. Material and Method: The data of 236 patients, who underwent radical gastrectomy for primary gastric cancer at Surgical Oncology Unit in the period between January 2015 and January 2020 were retrospective studied. The patients were divided into two groups: laparoscopic gastrectomy (LG; 136 cases) and open gastrectomy (OG; 106 cases). Patients who have undergone cholecystectomy, with primary or secondary liver tumors, with chronic hepatic disease, who have preoperative high ALT, AST and bilirubin values were excluded from the study. LFT were measured preoperatively and postoperative day 1 (LFT1), LFT3, LFT5 and LFT7. LFT: ALT, AST and Total bilirubin (BIL). Results: ALT1, ALT3, ALT5, ALT7 ALT values and AST1, AST3, AST5 AST values of the patients in the LG group were found to be significantly higher (P 0.05). In order to evaluate how the increase in LFT due to the use of the Nathanson retractors reflected on the patients' clinic, we divided the patients who underwent LG into two groups based on ALT increase in ALT1: Normal and Elevated. The in-hospital mortality rates (P = 0.080) and oral nutrition time (P = 0.913) of the groups were similar. No liver infarction developed in any of the groups. The duration of stay in the ICU was significantly longer in individuals with elevated LFT (P = 0.019). Conclusion: Although the use of the Nathanson retractor during LG causes an increase in liver function tests, this does not cause major clinical problems in patients. Key Words: Gastrectomy; gastric cancer; laparoscopy; liver enzymes; liver dysfunciton

Background. Luminal A breast cancer has a good prognosis and the criteria for adjuvant and neoadjuvant chemotherapy (NAC) are not clear. The aim of this study was to present our results of upfront surgery and long-term survival in luminal A tumors as well as the rates of protection from axillary dissection. Material and Methods. 271 Luminal A breast cancer patients who had operated at our center were evaluated retrospectively. In patients with 2 or less sentinel lymph node (SLN) positivity who did not receive neoadjuvant therapy and underwent breast-conserving surgery, axillary lymph node dissection was omitted (OAD). Axillary lymph node dissection (ALND) was performed in patients with positive SLN who did not meet these criteria (axillary dissection after sentinel/ADAS). Results. While Sentinel Lymph Node Biopsy (SLNB) was performed in 212 (77.9) patients, SLNB+Axillary Dissection (AD) was performed in 58 (21.3), and direct axillary dissection was performed in 1 (0.8) patient. OAD was applied to 18 (23.6) of the positive patients. Discussion/Conclusions. ALND rates are still strikingly high in luminal A breast cancer treatment, despite the diseases milder clinical course. In order to avoid complications of axillary dissection, patients should be considered for NAC as much as possible. Novel neoadjuvant or other therapy options are also required.

Introduction: The study aims to evaluate the long-term results of patients who underwent laparoscopic gastrectomy for gastric cancer in Ankara University Medical Faculty, Surgical Oncology Clinic, within 5 years. Materials and Methods: We retrospectively reviewed the data of patients who underwent laparoscopic gastrectomy for gastric cancer at the Surgical Oncology Clinic of Ankara University Medical Faculty between January 2014 and September 2019. One hundred forty-six patients were included in the study. Results: Fifty-one (34.9%) of the patients were female; 95 (65.1%) were male. The mean ± standard deviation and median (minimum–maximum) values of the patients were 60.92 ± 14.13 and 64.00 (22.00–93.00), respectively ( Table 1 ). Eighty-seven (59.6%) cases were located in the antrum, 29 (19.9%) were in the cardia region, and 30 (20.5%) were in the corpus region. Overall, 106 (72.6%) of 146 patients were alive, while 40 (27.4%) were ex. The mean survival was 21.8 months (0–69). Postoperative mortality was seen in 9 patients (6.2%) and our disease-free survival rate was 70.5%. Recurrence occurred in 14 (9.6%) of all patients. Table 1. Patient Characteristics Variables Age Mean ± SD 60.92 ± 14.13 Median (min.–max.) 64.00 (22.00–93.00) Albumin Mean ± SD 3.90 ± 0.51 Median (min.–max.) 4.00 (2.50–5.01) Met lymph count Mean ± SD 8.41 ± 7.05 Median (min.–max.) 6.00 (1.00–40.00) Total lymph count Mean ± SD 23.09 ± 8.97 Median (min.–max.) 22.00 (4.00–52.00) Survival Mean ± SD 21.83 ± 17.40 Median (min.–max.) 17.50 (0.10–69.00) Gender, n (%) Man 95 (65.1) Woman 51 (34.9) Morbidity, n (%) No 117 (80.1) Yes 29 (19.9) TM location, n (%) Antrum 87 (59.6) Cardia 39 (19.9) Corpus 30 (20.5) Operation, n (%) Subtotal 103 (70.5) Total 43 (29.5) Anastomosis, n (%) Open 6 (4.1) Intracorporeal 54 (37.0) Mini-laparotomy 86 (58.9) Sur comp, n (%) No 131 (89.7) Yes 15 (10.3) T, n (%) 1 32 (21.9) 2 18 (12.3) 3 55 (37.7) 4 41 (28.1) N, n (%) Negative 68 (46.6) Positive 78 (53.4) Mortality, n (%) No 106 (72.6) Yes 40 (27.4) Recurrence, n (%) No 132 (90.4) Yes 14 (9.6) Conclusion: In conclusion, although laparoscopic gastrectomy is a reliable and feasible method for gastric cancer, the standardization of laparoscopic surgery is required in clinics.