The natural history of intracholecystic papillary neoplasm (ICPN), especially the speed of growth from small benign to a carcinomatous lesion, is quite unrevealed. Here, we report an extremely rare case of ICPN, in which the papillary lesion was observed transforming from small and benign to malignant using abdominal ultrasound (AUS) over 2 years during routine health checks. A 44-year-old man underwent a routine health check-up. The initial AUS showed a small sessile polyp in the gallbladder, which enlarged slightly at the next AUS, a year later. In the third year, the polypoid lesion enlarged markedly, with a maximum diameter of 10 × 9 × 7 mm. Therefore, a laparoscopic cholecystectomy was performed. Microscopically, the 10 mm tumor had intracytoplasmic mucus, and a clear cytoplasm compatible with gastric-type features. Immunohistochemical analysis showed positive staining of atypical cells for MUC6 and PAS. These findings led to the diagnosis of ICPN with high-grade intraepithelial neoplasia of the gastric type. In conclusion, sessile polyps with rapid growth might be a crucial finding in the early stage of ICPN.

Aim: This study aimed to compare the incidence of postoperative nonalcoholic fatty liver disease (NAFLD), postoperative cholangitis, and fibrosis‐4 (FIB)‐4 index in patients who underwent duodenum‐preserving pancreatic head resection (DPPHR) and pancreaticoduodenectomy (PD) for low‐grade malignant tumors and verify the usefulness of DPPHR in preventing the occurrence of these disorders.Methods: This retrospective study included 70 patients who underwent PD (n = 39) and DPPHR (n = 31) between 2006 and 2018 for benign or low‐grade malignant tumors. The present study compared the preoperative background, cumulative incidence of postoperative NAFLD and cholangitis, and other biochemical markers, including the FIB‐4 index. Subanalysis by propensity score matching (PSM) analysis was conducted to minimize treatment selection bias.Results: In terms of the cumulative incidence of NAFLD, the 5‐y incidence was significantly lower in the DPPHR group than in the PD group both before (10% vs 38%, P = .002) and after (13% vs 38%, P = .008) matching. Multivariate analyses identified DPPHR as the only independent preventive factor for postoperative NAFLD (hazard ratio: 0.160, 95% confidence intervals: 0.034–0.76, P = .021). The 5‐y cumulative incidence of postoperative cholangitis was significantly higher in the PD group than in the DPPHR group before (51% vs 3%, P < .001) and after (49% vs 4%, P < .001) matching. The FIB‐4 index at 12 mo postoperatively was significantly better in the DPPHR group than in the PD group (1.45 vs 2.35, P = .006) before matching.Conclusion: Preservation of the duodenum and bile duct may contribute to preventing long‐term postoperative NAFLD and cholangitis, and liver fibrosis for benign or low‐grade malignant pancreatic head tumors.

Background: Healthcare-related adverse events occur because of complex healthcare systems. The patient safety reporting system is a core component of patient safety initiatives in hospitals. However, hospital management often encounters a cultural barrier with its implementation and struggles to overcome the same. Implementation science would be useful for analysing implementation strategies. This study determines the effects of the implemented strategy on an increase in the number of patient safety reports and the determinants of successful implementation, using the implementation framework. Methods: Mixed method analysis was performed in Fujita Health University Hospital (FHUH), a large volume hospital in Japan. We identified strategies to implement the patient safety reporting system by scrutinising internal documents using the Consolidated Framework for Implementation Research (CFIR). The electronic reporting systems developed in 2004 in the FHUH and the number of reports were analysed using the staff data and hospital volumes. Results: Reports (n = 110,058) issued between April 2004 and March 2020 were analysed. The number of reports increased from 2004 to 2008 and from 2013 to 2019, reaching 14,037 reports per year. Between 2009 and 2012, the FHUH experienced a stagnation period where the number of reports were not increasing. From the qualitative materials, we identified 74 strategies which contributed to the implementation of the patient safety reporting system. Among these, the domain of ‘intervention characteristics’ in the CFIR contained 12 strategies, ‘outer settings’ contained 20, ‘inner settings’ contained 21, ‘characteristics of individuals’ contained 8, and ‘process’ contained 13. There were two concentrated periods of the implemented strategies, the number was 17 in 2007 and 10 in 2016. These concentrated periods preceded a remarkable increase in the number of patient safety reports. Conclusions: A safety culture had been fostered in FHUH in the study period. A relationship between number of strategies and development of a reporting culture was observed. The intensity of adequate strategies was needed for implementation of patient safety reporting system. Therefore, the implementation framework is useful for analysing patient safety initiatives for safety culture.

Heterotopic pancreas (HP) is a rare entity which is defined as the presence of pancreatic tissue lacking anatomical and vascular continuity with the pancreas. It is most commonly found along foregut derivatives, such as the stomach, duodenum, and jejunum. It is frequently encountered incidentally in asymptomatic patients, and symptomatic patients are rare and do not exhibit any specific symptoms. Accordingly, HP is difficult to diagnose before surgery. Here we report an unusual case of gastric heterotopic pancreatitis causing gastric outlet obstruction diagnosed preoperatively using endoscopic ultrasonography guided fine needle aspiration cytology. A 21-year-old woman was referred to our hospital because of abdominal pain, nausea, and vomiting. Gastroduodenal endoscopic examination revealed an oval-shaped submucosal tumor in the gastric body. Contrast-enhanced computed tomography (CT) revealed that the tumor had a cystic component and marked perigastric inflammation. Endoscopic ultrasonography (EUS) demonstrated a hypoechoic mass arising from the third to fourth layer of the gastric wall. Pancreatic exocrine glands were detected by EUS-guided fine needle aspiration biopsy. The lesion was diagnosed as gastric heterotopic pancreas with inflammation of the pancreatic tissue. Laparoscopic partial gastrectomy was performed, and the diagnosis was also histologically confirmed. The patient was discharged 5 days after the operation. She has remained healthy and symptom-free during 10 months of follow-up. We experienced a first case of gastric heterotopic pancreatitis which was correctly diagnosed preoperatively and resected by laparoscopic surgery. Partial resection of the heterotopic pancreatic tissue could lead to a good outcome.

This study aimed to determine if introducing nontechnical skills to surgical trainees during surgical education can reduce the operation time and contribute to patient safety. Quality improvement initiatives using the KAIZEN as a problem-solving method. Department of surgery in a referral and educational hospital. Surgical team and quality management team. The KAIZEN was used as a problem-solving method between 2015 and 2018 to reduce the operation time. First, baseline measurement was performed to understand the current situations in our department. To achieve continuous improvement, periodical feedback of the current status was obtained from all staff. Bundles, including nontechnical skills, were established. Briefing and debriefing were performed by the surgical team. Excessively long operation rates with a standard procedure. We included 1573 operations in this initiative. Excessively long operation rates were reduced in all types of surgeries, from 27.1% to 15.2% for herniorrhaphy (P = 0.005), 58.3–40.0% for gastrectomy (P = 0.03), 50.0–4.1% for total gastrectomy (P = 0.12), 65.6–45.0% for colectomy (P = 0.004), 67.8–43.2% for high anterior resection (P = 0.02) and 69.6–47.9% for low anterior resection (P = 0.03). The adherence to briefing and debriefing were improved, and majority of the surgeons favored the bundle elements. The KAIZEN initiative was effective in clinical healthcare settings. In the event of scaling-up this initiative, the educational program for physicians should include project management strategies and leadership skills.

Background: Safety culture development is essential for patient safety in healthcare institution. Perceptions of patient safety and cultural changes are shown up in patient safety reports, however, were rarely investigated. The aim of this study was to investigate the perception of physicians and to explore the development of safety culture using quantitative content analysis for patient safety reports. Methods: A retrospective analysis of free descriptions of harmful patient safety reports submitted by physicians was performed. Natural language processing and text analysis were conducted using the ‘KH Coder’. A co-occurrence analysis was performed in each period to identify and analyze the safety concepts. The study period was grouped into three for comparison. Results: The patient safety reports from physicians were collected between April 2004 and March 2020. Of these, 3351 reports were harmful; 839 reports were included in period 1, 1016 reports in period 2, and 1496 reports in period 3. Natural language processing identified 316 307 words in the free descriptions of 3351 reports. We identified seven concepts from the cluster in co-occurrence analysis as follows: ‘explanation of adverse event to patients and families,’ ‘central venous catheter,’ ‘intraoperative procedure and injury,’ ‘minimally invasive surgery,’ ‘life-threatening events,’ ‘blood loss,’ and ‘medical emergency team and critical care.’ These seven concepts showed significant differences among the three periods, except for ‘blood loss’. The ‘explanation of adverse event to patients and families’ decreased in proportion from 11.3% to 8.8% (p<0.05). The ‘central venous catheter’ decreased from 17.3% to 11.3% (p<0.01). Meanwhile, ‘minimally invasive surgeries’ and ‘intraoperative procedures’ increased from 3.9% to 12.9% (p<0.01) and from 10.8% to 14.6% (p<0.05), respectively. Focusing on patients’ events, ‘life-threatening events’ decreased from 13.0% to 8.1% (p<0.01); however, ‘medical emergency teams and critical care’ increased from 3.3% to 10.6% (p<0.01). Conclusion: Free description in patient safety reports is useful for evaluating the safety culture. Co-occurrence analysis revealed multiple concepts of physicians’ perceptions. Quantitative content analysis revealed changes in perceptions and attitudes, and a disclosure policy of adverse events and priority of patient care appeared with the development of safety culture.