THROMBOSIS OF THE SHORT ARTERIES OF THE STOMACH AS A CAUSE OF NECROSIS OF THE STUMP OF THE STOMACH AFTER SUBTOTAL DISTAL RESECTION: A CLINICAL CASE

This article covers the problem of ischemic necrosis of the gastric stump after its distal resection, which is a rare but one of the most formidable complications of surgical treatment.

Influence of the gastric stump’s volume on the long-term results of laparoscopic Roux-en-Y gastric bypass surgery

The objective was to retrospectively analyze the dependence of long-term results of laparoscopic Roux-en-Y gastric bypass surgery according to the size of the formed gastric stumpMethods and materials. We retrospectively analyzed the long-term results of 207 morbidly obese patients who underwent laparoscopic Roux-en-Y gastric bypass surgery by two different techniques. The median follow-up was 36 months. Two groups of patients were identified according to the method of formation of the gastric stump: using 2 (1st group) or 3 (2nd group) stapler cassettes and performing of computed tomography volumetry to determine thevolume of the created gastric stump.Results. Statistically significant differences in the volume of the formed gastric stump, depending on the method of operation, were as follows: 23.8 ml (8.9–37.3 ml) in the 1st group and 47.7 ml (31.9–72.8 ml) in the 2nd group (p<0.0001). Significant differences were observed in the following indicators: relapse of weight gain or insufficient weight loss (loss of < 70 % overweight) at median follow-up of 36 months were observed in 2 (2.3 %) and 12 (9.9 %) cases in the 1st and 2nd groups, respectively (p<0.05).Conclusion. We revealed that the formation of the gastric stump of a very small volume by 2 stapler cassettes compared to using 3 stapler cassettes contributes to improving the results in the long-term postoperative period and minimizing the frequency of relapse of weight gain and insufficient weight loss. The restrictive component of the surgery with equal malabsorptive is fundamental for the clinical parameters of its effectiveness, that leads to increasing the frequency of relapses of weight gain and insufficient weight loss in the 2nd group in comparison with the 1st and group of patients (p<0.05). Based on computed tomography volumetry, the volume of a small-sized stomach stump can be reliably measured and, accordingly, weight loss is predicted in the long term after the surgery, as well as the absence of relapses of weight gain or insufficient weight loss.

Molecular and pathological analyses of gastric stump cancer by next-generation sequencing and immunohistochemistry

Gastric stump cancer (GSC) has distinct clinicopathological characteristics from primary gastric cancer. However, the detailed molecular and pathological characteristics of GSC remain to be clarified because of its rarity. In this study, a set of tissue microarrays from 89 GSC patients was analysed by immunohistochemistry and in situ hybridisation. Programmed death ligand 1 (PD-L1) was expressed in 98.9% of tumour-infiltrating immune cells (TIICs) and 6.7% of tumour cells (TCs). Epstein–Barr virus (EBV) was detected in 18 patients (20.2%). Overexpression of human epidermal growth factor receptor 2 and deficiency of mismatch repair (MMR) protein expression were observed in 5.6% and 1.1% of cases, respectively. Moreover, we used next-generation sequencing to determine the gene mutation profiles of a subset of the 50 most recent patients. The most frequently mutated genes were TP53 (42.0%) followed by SMAD4 (18.0%) and PTEN (16.0%), all of which are tumour suppressor genes. A high frequency of PD-L1 expression in TIICs and a high EBV infection rate suggest immune checkpoint inhibitors for treatment of GSC despite a relatively low frequency of deficient MMR gene expression. Other molecular characteristics such as PTEN and SMAD4 mutations might be considered to develop new treatment strategies.

The option of surgery for gastric stump cancer in patients who have previously undergone pancreaticoduodenectomy

Gastric stump cancer is a carcinoma which forms no earlier than 5years after surgery for benign disease. The incidence ranges from 2.4 to 5% among patients with stomach cancer. Previous operations lead to the emergence of an adhesive process in the abdominal cavity, changes in the anatomy and topography of the abdominal organs, as well as the development of new ways of lymph outflow. These factors lead to the re-surgery becomes technically more complicated and requires high professional training from the surgeon. Of particular surgical interest is the issue of restoration of the digestive tract, which directly depends on the nature and volume of the previous surgery. In this paper, the authors describe cases of surgical treatment of gastric stump cancer in two patients, who had previously undergone pancreaticoduodenectomy.

Laparoscopic completion total gastrectomy as a standardized procedure for gastric stump cancer: a case control study

Objective Complete gastrectomy for gastric stump cancer (GSC) can be challenging due to severe adhesions; therefore, advanced techniques are required when being performed by laparoscopic surgery. This study aimed to evaluate the clinical outcomes of laparoscopic completion total gastrectomy (LCTG) for the treatment of GSC. Methods Patient records from January 2010 to October 2018 were retrospectively evaluated. The patients were classified into two groups depending on whether they underwent open or laparoscopic gastrectomy. We compared patient characteristics; operative, clinical, and pathological data between the groups. Results Twenty open and 17 LCTGs were performed. Laparoscopic gastrectomy resulted in a significantly longer operation time (230 vs. 182.5 min; p = 0.026), lower blood loss (14 vs. 105 mL; p &lt; 0.001), and shorter period to the first flatus passage (2 vs. 3 days; p &lt; 0.001) than open gastrectomy. No significant differences in the number of retrieved lymph nodes, duration of hospital stay, complication rate, and postoperative analgesic usage between the two groups were observed. No patients required conversion to open surgery in the laparoscopic-treatment group. Pathological findings revealed that the laparoscopic group had a smaller tumor size (not pathological T category) and fewer metastatic lymph nodes than the open group leading to an earlier distribution of the pathological stage in the laparoscopic group. Conclusions LCTG for the treatment of GSC was safely conducted with fewer complications and mortalities than previously reported results. Advanced technologies and sophistication of laparoscopic skills may further yield minimal invasiveness with better short-term outcome.

Endoscopic ultrasound for choledocholithiasis in Billroth II altered anatomy

Background and Objectives: Increasing application of EUSguided biliary drainage, however, does not determine the capabilities of complete EUSinvestigation of the common bile duct in patients with surgically altered upper gastrointestinal anatomy. The purpose of this study is to evaluate the specifi city and eff ectiveness of EUS for choledocholithiasis in a patient with Billroth II altered anatomy.Patient and Methods: A 61-year-old female patient underwent a Billroth II gastric resection about 25 years ago. Choledocholithiasis was diagnosed a year ago. At the present examination, the results of ultrasound and MRCP were doubtful. Gastroscopy showed the ability to intubate the afferent limb with accessible papilla. EUS was performed to decide on further patient management.Results: The common bile duct EUS-visualization was performed both from the gastric stump and from the afferent limb. The differences of intubating the afferent limb in comparison with the EGD, as well as the differences of the ultrasound picture in comparison with the traditional EUS of CBD were determined. Two CBD stones were detected by scanning from the afferent limb. ERCP was done in the same sedation session with balloon papilla dilatation and both stones lithoextraction. Laparoscopic cholecystectomy was performed on the second day without complications. The patient was discharged from the hospital on the fifth day after surgery. Within 10 months she feels well, no complaints.Conclusions: EUS can be diagnostic method of choice for choledocholithiasis in patients with Billroth II altered anatomy if intubation of the afferent limb was confirmed endoscopically.

Gastric Stump Cancer: Demanding a More Suitable Definition and TNM Staging System

BackgroundThe incidence of gastric stump cancer (GSC) following resection of gastric cancer has increase. However, the definition between GSC and recurrent gastric cancer (RGC) is still being debated. This study was conducted to compare the clinicopathological characteristics and outcome for this two groups.MethodsThe investigators retrospectively reviewed patients in the Surveillance Epidemiology and End Results (SEER) databases from 1975 to 2016 to identify patients who underwent resection of gastric cancer subsequently experienced metachronous gastric cancer. GSC was defined as cancer occurring in remnant stomach of ≥10 years after gastrectomy, while RGC was defined as <10 years after gastrectomy. T-test, Pearson χ2-test and Kaplan-Meier estimator method was used in the present study.ResultsAmong the 167,747 gastric cancer patients, 1,006 (0.6%) patients were diagnosed multiple gastric cancer, 93 patients met the GSC criterion, and 282 patients met the RGC criterion. The mean time interval between the initial cancer and second cancer for GSC was 13.34 years and 4.24 years for RGC. Male gender (P=0.003), younger age (60.1 years old vs. 65.9 years old, P<0.001) developed more frequently in GSC group. The median OS in GSC group was 20.0 months compared with 16.0 months for RGC group (p=0.302). Surgery treatment or not, the median OS have statistically significant (in RGC group, 64.0 months vs. 10.0 months, P＜0.001; 33 months vs. 13 months, P=0.014 in GSC group).ConclusionsIn our definition of GSC and RGC, the OS were not statistically significant and gastrectomy may be the appropriate treatment for this two groups. It may demand for a more suitable definition and TNM staging system for GSC.