Advanced Adenosquamous Carcinoma of the Ampulla of Vater Treated with Adjuvant Chemotherapy after Pancreaticoduodenectomy.

Introduction: Adenosquamous carcinoma (ASC) of the ampulla of Vater (AmV) is rare. The prognosis is generally worse in patients undergoing resection of ASC of the AmV than in those undergoing resection of adenocarcinoma of the AmV because the former shows early recurrence after surgery. A treatment strategy for ASC of the AmV has not been established, and the efficacy of adjuvant chemotherapy after curative resection is unclear. Given the paucity of data, we report a case of ASC of the AmV that was curatively resected and treated with adjuvant chemotherapy. Case Presentation: A 66-year-old man presented with pruritus and anorexia. Contrast-enhanced computed tomography revealed a tumor measuring 1.6 cm in diameter located at the AmV and distal bile duct. Biopsy revealed adenocarcinoma of the AmV. The patient underwent subtotal stomach-preserving pancreaticoduodenectomy. Histopathological examination contradictorily revealed ASC of the AmV and lymph node metastases. The postoperative course of the patient was uneventful, and he was discharged on day 25. The patient underwent S-1 adjuvant chemotherapy for 6 months and did not exhibit any postoperative recurrence for a follow-up duration of 28 months. Conclusion: Although treatment strategy for ASC of the AmV has not been established, our case shows that surgery followed by S-1 adjuvant chemotherapy could improve prognosis of patients with such tumors. However, further research is required to determine the efficacy of adjuvant chemotherapy and treatment strategies for resectable ASC of the AmV.

Effects of non-technical skill-based surgical education for trainees on herniorrhaphy outcomes.

INTRODUCTION: Non-technical skills are essential for surgical patient safety and are implemented in clinical practice. However, training for non-technical skills has not been thoroughly investigated. This study aimed to evaluate the learning curve for non-technical skill-based education in herniorrhaphy. METHODS: Quality improvement initiatives, including non-technical skill-based intervention, were performed in the department of surgery. The intervention included declaring the patient safety policy, briefing and debriefing, and criterion for the switching of places of the trainee and instructor as defined by the department. Patients who underwent herniorrhaphy from April 2014 to September 2017 were included. RESULTS: A total of 14 trainees and nine instructors in the pre-intervention period and 14 trainees and seven instructors in the intervention period were included in this study. The median experience of each trainee was 28 and 15 cases in the pre-intervention and intervention groups, respectively. A total of 749 patients were included: 473 in the pre-intervention period and 328 in the intervention period. Demographics and hernia types were mostly similar between groups, and morbidity was not statistically different between the two groups (3.4 vs. 1.2%, p = 0.054). The nonlinear regression model showed an early decline and deep plateau phase of the learning curve in the intervention group. A significant difference was observed in the plateau operation time (61 min in the pre-intervention group and 52 min in the intervention group). CONCLUSION: This study demonstrated the effectiveness of non-technical skill-based intervention for surgical training. An early decline and deep plateau of the learning curve can be achieved with well-implemented quality improvement initiatives. Nonetheless, further studies are needed to establish a training program for non-technical skill-based learning.

Machine learning-assisted medium optimization revealed the discriminated strategies for improved production of the foreign and native metabolites.

The composition of medium components is crucial for achieving the best performance of synthetic construction in genetically engineered cells. Which and how medium components determine the performance, e.g., productivity, remain poorly investigated. To address the questions, a comparative survey with two genetically engineered Escherichia coli strains was performed. As a case study, the strains carried the synthetic pathways for producing the aromatic compounds of 4-aminophenylalanine (4APhe) or tyrosine (Tyr), common in the upstream but differentiated in the downstream metabolism. Bacterial growth and compound production were examined in hundreds of medium combinations that comprised 48 pure chemicals. The resultant data sets linking the medium composition to bacterial growth and production were subjected to machine learning for improved production. Intriguingly, the primary medium components determining the production of 4PheA and Tyr were differentiated, which were the initial resource (glucose) of the synthetic pathway and the inducer (IPTG) of the synthetic construction, respectively. Fine-tuning of the primary component significantly increased the yields of 4APhe and Tyr, indicating that a single component could be crucial for the performance of synthetic construction. Transcriptome analysis observed the local and global changes in gene expression for improved production of 4APhe and Tyr, respectively, revealing divergent metabolic strategies for producing the foreign and native metabolites. The study demonstrated that ML-assisted medium optimization could provide a novel point of view on how to make the synthetic construction meet the designed working principle and achieve the expected biological function.

Growth rate-associated transcriptome reorganization in response to genomic, environmental, and evolutionary interruptions.

The genomic, environmental, and evolutionary interruptions caused the changes in bacterial growth, which were stringently associated with changes in gene expression. The growth and gene expression changes remained unclear in response to these interruptions that occurred combinative. As a pilot study, whether and how bacterial growth was affected by the individual and dual interruptions of genome reduction, environmental stress, and adaptive evolution were investigated. Growth assay showed that the presence of the environmental stressors, i.e., threonine and chloramphenicol, significantly decreased the growth rate of the wild-type Escherichia coli, whereas not that of the reduced genome. It indicated a canceling effect in bacterial growth due to the dual interruption of the genomic and environmental changes. Experimental evolution of the reduced genome released the canceling effect by improving growth fitness. Intriguingly, the transcriptome architecture maintained a homeostatic chromosomal periodicity regardless of the genomic, environmental, and evolutionary interruptions. Negative epistasis in transcriptome reorganization was commonly observed in response to the dual interruptions, which might contribute to the canceling effect. It was supported by the changes in the numbers of differentially expressed genes (DEGs) and the enriched regulons and functions. Gene network analysis newly constructed 11 gene modules, one out of which was correlated to the growth rate. Enrichment of DEGs in these modules successfully categorized them into three types, i.e., conserved, responsive, and epistatic. Taken together, homeostasis in transcriptome architecture was essential to being alive, and it might be attributed to the negative epistasis in transcriptome reorganization and the functional differentiation in gene modules. The present study directly connected bacterial growth fitness with transcriptome reorganization and provided a global view of how microorganisms responded to genomic, environmental, and evolutionary interruptions for survival from wild nature.

Surgical resection of arteriovenous malformation of the pancreatic head with acute pancreatitis: a case report.

Arteriovenous malformations (AVMs) are uncommon in the gastrointestinal tract, particularly in the pancreas. AVMs cause complications, including gastrointestinal bleeding, portal hypertension and pancreatitis. Therefore, a treatment strategy is not yet established. Surgical treatment or transcatheter arterial embolization is performed in patients with AVM, considering their conditions. A 54-year-old man presented with acute abdominal pain was diagnosed with acute pancreatitis due to AVM of the pancreatic head using dynamic computed tomography. Endoscopic ultrasonography further revealed meandering blood vessels in the pancreatic head. The patient underwent subtotal stomach-preserving pancreaticoduodenectomy. Histological examination revealed AVM of the pancreatic head with chronic pancreatitis. The patient had a good postoperative clinical course and was discharged on postoperative day 22. He remained asymptomatic. Pancreaticoduodenectomy can be considered an effective treatment method for selected cases of symptomatic AVM of the pancreatic head.

Tailor-Made Tapering Grafts for Large-Neck Aorta.

Patients having a large aortic neck poses a challenge in abdominal aortic aneurysm surgery both in endovascular and open aneurysm repair, sometimes necessitating paravisceral or thoracoabdominal aneurysm repair which carries considerable perioperative risk. Here, we describe techniques of using a tailor-made tapering graft in open surgery that can be adjusted for large neck morphology. This technique helps avoid discrepancies between the proximal aorta and graft, and postoperative acute kidney injury by clamping at lower levels. The conscientious use of this technique in selected patients realizes satisfactory outcomes both in the short term and midterm in the demanding anatomy of large aortic necks.

Clinical Features of Early Stage COVID-19 in a Primary Care Setting.

Background: The coronavirus disease 2019 (COVID-19) pandemic remains a global healthcare crisis. Nevertheless, the majority of COVID-19 cases involve mild to moderate symptoms in the early stages. The lack of information relating to these cases necessitates further investigation. Methods: Patients visiting the outpatient clinic at the Kamagaya General Hospital were screened by interview and body temperature check. After initial screening, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection was suspected in 481 patients who then underwent blood tests and the loop-mediated isothermal amplification (LAMP) test for SARS-CoV-2. Clinical characteristics between positive and negative SARS-CoV-2 groups were compared. Further, the novel predictive value of routine blood test results for SARS-CoV-2 infection was evaluated using ROC analysis. Results: A total of 15,560 patients visited our hospital during the study period. After exclusion and initial screening by interview, 481 patients underwent the LAMP test and routine blood tests. Of these patients, 69 (14.3%) were positive for SARS-CoV-2 and diagnosed with COVID-19 (positive group), and 412 (85.7%) were negative (negative group). The median period between the first onset of symptoms and visit to our hospital was 3.4 and 2.9 days in the negative and positive groups, respectively. Cough (p = 0.014), rhinorrhea (p = 0.039), and taste disorders (p < 0.001) were significantly more common in the positive group, while gastrointestinal symptoms in the negative group (p = 0.043). The white blood cell count (p < 0.001), neutrophil count (p < 0.001), and percentage of neutrophils (p < 0.001) were higher in the negative group. The percentage of monocytes (p < 0.001) and the levels of ferritin (p < 0.001) were higher in the positive group. As per the predictive values for COVID-19 using blood tests, the values for the area under the curve for the neutrophil-to-monocyte ratio (NMR), white blood cell-to-hemoglobin ratio (WHR), and the product of the two (NMWH) were 0.857, 0.837, and 0.887, respectively. Conclusion: Symptoms in early stage COVID-19 patients were similar to those in previous reports. Some blood test results were not consistent with previous reports. NMR, WHR, and NMWH are novel diagnostic scores in early-stage mild-symptom COVID-19 patients in primary care settings.

The highly conserved chromosomal periodicity of transcriptomes and the correlation of its amplitude with the growth rate in Escherichia coli.

The growth rate, representing the fitness of a bacterial population, is determined by the transcriptome. Chromosomal periodicity, which is known as the periodic spatial pattern of a preferred chromosomal distance in microbial genomes, is a representative overall feature of the transcriptome; however, whether and how it is associated with the bacterial growth rate are unknown. To address these questions, we analysed a total of 213 transcriptomes of multiple Escherichia coli strains growing in an assortment of culture conditions varying in terms of temperature, nutrition level and osmotic pressure. Intriguingly, Fourier transform analyses of the transcriptome identified a common chromosomal periodicity of transcriptomes, which was independent of the variation in genomes and environments. In addition, fitting of the data to a theoretical model, we found that the amplitudes of the periodic transcriptomes were significantly correlated with the growth rates. These results indicated that the amplitude of periodic transcriptomes is a parameter representing the global pattern of gene expression in correlation with the bacterial growth rate. Thus, our study provides a novel parameter for evaluating the adaptiveness of a growing bacterial population and quantitatively predicting the growth dynamics according to the global expression pattern.

Correlated chromosomal periodicities according to the growth rate and gene expression.

Linking genetic information to population fitness is crucial to understanding living organisms. Despite the abundant knowledge of the genetic contribution to growth, the overall patterns/features connecting genes, their expression, and growth remain unclear. To reveal the quantitative and direct connections, systematic growth assays of single-gene knockout Escherichia coli strains under both rich and poor nutritional conditions were performed; subsequently, the resultant growth rates were associated with the original expression levels of the knockout genes in the parental genome. Comparative analysis of growth and the transcriptome identified not only the nutritionally differentiated fitness cost genes but also a significant correlation between the growth rates of the single-gene knockout strains and the original expression levels of these knockout genes in the parental strain, regardless of the nutritional variation. In addition, the coordinated chromosomal periodicities of the wild-type transcriptome and the growth rates of the strains lacking the corresponding genes were observed. The common six-period periodicity was somehow attributed to the essential genes, although the underlying mechanism remains to be addressed. The correlated chromosomal periodicities associated with the gene expression-growth dataset were highly valuable for bacterial growth prediction and discovering the working principles governing minimal genetic information.

Bundle interventions including nontechnical skills for surgeons can reduce operative time and improve patient safety.

OBJECTIVE: 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. DESIGN: Quality improvement initiatives using the KAIZEN as a problem-solving method. SETTING: Department of surgery in a referral and educational hospital. PARTICIPANTS: Surgical team and quality management team. INTERVENTION: 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. MAIN OUTCOME MEASURES: Excessively long operation rates with a standard procedure. RESULTS: 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. CONCLUSIONS: 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.

Learning Curve Analysis to Determine Operative Requirements for Young Vascular Surgeons Learning Open Abdominal Aortic Aneurysm Repair.

BACKGROUND: Since endovascular aneurysm repair has become predominant, the issue of training young vascular surgeons in open abdominal aortic aneurysm (AAA) surgery has received significant attention. Through learning curve analysis, we aimed to determine the number of cases needed for young surgeons to achieve satisfactory open surgical skills.Methods and Results:A total of 562 consecutive patients who underwent open repair either by an attending surgeon (group A) or 6 young vascular surgeons (group Y) were included and assessed with regards to the preparation, clamp, and total operation times. Although some of the patients' characteristics were different, the surgical procedures were comparable between the 2 groups. There was a clear trend towards a decrease in each 10 successive cases in group Y. The operation times in group A were constant at 72±30 (preparation), 48±10 (clamp), and 231±59 min (total), which were achieved by young vascular surgeons in 10, 30, and 10 cases, respectively. In the cumulative sum analysis, 25-27 cases were necessary for young vascular surgeons to enhance their surgical skills. The complication rate in group Y was no higher than that in group A. CONCLUSIONS: Young vascular surgeons can safely learn open AAA repair without increasing operation time or complications. Approximately 30 cases would be necessary to gain satisfactory surgical skills.

Factors Affecting Longer Stay and Higher Costs during Elective Open Repair for Abdominal Aortic Aneurysm: A Case-Control Study.

BACKGROUND: Open surgery for abdominal aortic aneurysm (AAA) has the advantage of requiring less reintervention compared with endovascular aneurysm repair. The reduction of the initial hospitalization costs can provide socioeconomic benefits. The objective of this study was to determine the factors associated with an increase in the length of hospital stay and costs of open surgery for AAA. METHODS: A total of 579 consecutive patients who underwent open surgery for intact AAA and survived, between 1998 and 2015 at Asahi General Hospital in Japan, were included in the analysis. Patients' characteristics, aneurysm morphology, operative procedures, postoperative complications, and postoperative courses were analyzed in relation to the hospital length of stay and costs. Patients with longer stays or higher costs (exceeding the third quartile) were compared with those with stays or costs no more than the third quartile. RESULTS: The mean patient age was 75 ± 8 years, and 492 patients (85%) were male, with a mean aortic diameter of 57 ± 10 mm. The mean operation time was 214 ± 56 min with an estimated mean blood loss of 444 ± 305 g. Transfusion was required in 28 patients (4.8%) and return to the operating room (RTOR) in 18 patients (3.1%). The median postoperative hospital stay was 7 (7-8) days. Median costs of hospitalization were 12,300 (11,800-13,100) United States Dollar. In the multivariate analysis, the major factors which increased the length of stay were transfusion, late ambulation, and prolonged fasting time. Major risk factors for higher total hospitalization costs were transfusion, RTOR, and longer fasting time. CONCLUSIONS: Regardless of the patients' comorbidities or aneurysm morphology, avoidance of transfusion and RTOR, combined with early ambulation and enteral feeding in the postoperative care, can reduce the length of stay and total hospitalization costs associated with open surgery for AAA.

Development and validation of a nomogram predicting postoperative pneumonia after major abdominal surgery.

PURPOSE: Postoperative pneumonia (POP) is a common complication that can adversely affect the outcomes after surgery. This study aimed to devise and validate a model for stratifying the probability of POP in patients undergoing abdominal surgery. METHODS: We included 1050 patients who underwent major abdominal surgery between 2012 and 2013. A nomogram was devised by evaluating the predictive factors for POP. RESULTS: Of the 1050 patients, 56 (5.3%) developed POP. Multivariable logistic regression analysis revealed that the independent predictive factors for POP were age, male sex, history of cerebrovascular disease, Brinkman Index (BI) ≥ 900, and upper midline incision. A nomogram was devised by employing these five significant predictive factors. The prediction model showed a relatively good discrimination performance, with a concordance index of 0.77. CONCLUSIONS: A nomogram based on age, male sex, history of cerebrovascular disease, BI ≥ 900, and upper midline incision may be useful for identifying patients with a high probability of developing POP after major abdominal surgery.

Lower risk of postoperative delirium using laparoscopic approach for major abdominal surgery.

BACKGROUND: A laparoscopic approach is increasingly being used for major abdominal surgeries and is reportedly associated with a lower incidence of postoperative complications. However, the association of laparoscopic approach and postoperative delirium remains unclear. We aimed to retrospectively investigate risk factors for postoperative delirium after abdominal surgery particularly assessing the association between a laparoscopic approach and postoperative delirium. METHODS: We retrospectively studied 801 patients who underwent major abdominal surgery between April 2012 and December 2013. Among these, 181 (22.6%) patients underwent a laparoscopic and 620 (77.4%) patients underwent an open procedure. A Cox proportional hazard model analysis was used to identify risk factors for the development of postoperative delirium or overall survival within 180 days after surgery. Cumulative incidence of postoperative delirium was assessed using a propensity score-matching analysis. RESULTS: Postoperative delirium occurred in 56 patients (7.0%). A Multivariate Cox proportional hazard model analysis revealed that a laparoscopic approach reduced the risk of postoperative delirium [hazard ratio (HR) 0.30, 95% confidence interval (CI) 0.07-0.84, p = 0.019]. Postoperative delirium was associated with worse overall survival within 180 days (HR 4.91, 95% CI 1.96-12.22, p = 0.001) after adjusting for other confounders using the Cox proportional hazard model analysis. Patients who developed postoperative delirium showed worse outcomes including higher rate of morbidity except delirium (p < 0.001), longer hospitalization (p < 0.001), and post-discharge institutionalization (p < 0.001). After propensity score-matching, cumulative incidence rates of postoperative delirium were significantly lower in the laparoscopic group compared to the open group (30-day cumulative incidence rate, 1.7% vs. 7.8%, p = 0.006). CONCLUSIONS: The risk of postoperative delirium after major abdominal surgery is reduced using laparoscopic approach. Postoperative delirium should be prevented as it precipitates adverse postoperative events.

Cattell-Braasch Maneuver: A Gadget to Manipulate Abdominal Aortic Aneurysm in a Patient with a Left-Sided Inferior Vena Cava.

A 76-year-old man was diagnosed with abdominal aortic aneurysm and a left-sided inferior vena cava. He underwent open surgery, and we employed the Cattell-Braasch maneuver to approach the abdominal aortic aneurysm from the right side. This enabled securing of the abdominal aortic aneurysm neck without mobilizing or dissecting the inferior vena cava. His postoperative course was uneventful. Although abdominal aortic aneurysm is typically approached from the left side in open surgery, approaching from the right side is beneficial in patients with abdominal aortic aneurysm and a left-sided inferior vena cava.

Perioperative Factors Predicting Prolonged Postoperative Ileus After Major Abdominal Surgery.

BACKGROUND: Prolonged postoperative ileus (PPOI) is among the common complications adversely affecting postoperative outcomes. Predictors of PPOI after major abdominal surgery remain unclear, although various PPOI predictors have been reported in patients undergoing colorectal surgery. This study aimed to devise a model for stratifying the probability of PPOI in patients undergoing abdominal surgery. METHODS: Between 2012 and 2013, 841 patients underwent major abdominal surgery after excluding patients who underwent less-invasive abdominal surgery, ileus-associated surgery, and emergency surgery. Postoperative managements were generally based on enhanced recovery after surgery (ERAS) program. The definition of PPOI was based on nausea, no oral diet, flatus absence, abdominal distension, and radiographic findings. A nomogram was devised by evaluating predictive factors for PPOI. RESULTS: Of the 841 patients, 73 (8.8%) developed PPOI. Multivariable logistic regression analysis revealed smoking history (P = 0.025), colorectal surgery (P = 0.004), and an open surgical approach (P = 0.002) to all be independent predictive factors for PPOI. A nomogram was devised by employing these three significant predictive factors. The prediction model showed relatively good discrimination performance, the concordance index of which was 0.71 (95%CI 0.66-0.77). The probability of PPOI in patients with a smoking history who underwent open colorectal surgery was calculated to be 19.6%. CONCLUSIONS: Colorectal surgery, open abdominal surgery, and smoking history were found to be independent predictive factors for PPOI in patients who underwent major abdominal surgery. A nomogram based on these factors was shown to be useful for identifying patients with a high probability of developing PPOI.

Laparoscopic Management of Mirizzi Syndrome Without Dissection of Calot's Triangle.

BACKGROUND: Mirizzi syndrome (MS) is a rare complication of cholecystolithiasis that causes compacted gallstones and is often accompanied by severe inflammation of Calot's triangle. This study compared the use of laparoscopic surgery for MS without dissection of Calot's triangle with routine laparoscopic cholecystectomy (LC). METHODS: A total of 411 consecutive patients underwent laparoscopic surgery for benign gallbladder (GB) disease between January 2013 and December 2014. Five patients underwent laparoscopic surgery for MS (MS group) while 406 underwent routine LC (LC group). The preoperative diagnosis was accurate in all patients in the MS group. RESULTS: The LC and MS groups did not differ significantly in the operation time, blood loss, length of hospital stay, or incidence of GB carcinoma. In addition, conversion, bile duct injury, and bile leak rate were not different between the two groups. CONCLUSIONS: This study demonstrates the safety of laparoscopic partial cholecystectomy without dissection of Calot's triangle for MS. In addition, an accurate preoperative diagnosis is critical in surgical decision making to avoid injury to the bile duct.

Insufficient Lymph Node Sampling in Patients with Colorectal Cancer Perforation is Associated with an Adverse Oncological Outcome.

BACKGROUND: The impact of lymph node (LN) dissection on long-term outcomes for patients with colorectal cancer (CRC) perforation remains unclear. We aim to investigate factors associated with poor prognosis and recurrence in patients with CRC, with special reference to cancer perforation and LN dissection. METHODS: The subjects comprised 550 patients who underwent colorectal surgery for CRC at Stage II or III (TNM classification) between February 2006 and November 2013. Short- and long-term outcomes of patients with or without CRC perforation were evaluated. We also sought risk factors on poor prognosis, focusing on LN dissection in patients with CRC perforation. RESULTS: A total of 508 underwent surgery for CRC without perforation (the non-perforation group) and 39 for CRC with perforation (the perforation group). Both overall survival and recurrence-free survival rates were significantly lower in the perforation group than in the non-perforation group (overall survival, P = 0.009; recurrence-free survival, P < 0.001). The relapse rates at the peritoneum (P = 0.002), lung (P = 0.007) and LNs (P = 0.021) were significantly higher in the perforation group than in the non-perforation group. Multivariable Cox proportional hazards model revealed that CRC perforation (hazard ratio [HR] 2.55, 95 % confidential interval [CI] 1.16-4.98, P = 0.022), LN dissection <12 (HR 1.83, 95 % CI 1.07-3.13, P = 0.027), and Stage III (HR 1.79, 95 % CI 1.06-3.08, P = 0.031) were significant and independent risk factors for poor prognosis. CONCLUSIONS: Conducting <12 LN dissections independently increased the risk of reduction in overall survival for patients with CRC perforation. Thus, radical LN dissections should be performed to improve patients' survival rates, when patients' general and surgical conditions allow.

Laparoscopic surgery for small-bowel obstruction caused by Meckel's diverticulum.

A 26-year-old woman was referred to our hospital because of abdominal distention and vomiting. Contrast-enhanced computed tomography showed a blind loop of the bowel extending to near the uterus and a fibrotic band connecting the mesentery to the top of the bowel, suggestive of Meckel's diverticulum (MD) and a mesodiverticular band (MDB). After intestinal decompression, elective laparoscopic surgery was carried out. Using three 5-mm ports, MD was dissected from the surrounding adhesion and MDB was divided intracorporeally. And subsequent Meckel's diverticulectomy was performed. The presence of heterotopic gastric mucosa was confirmed histologically. The patient had an uneventful postoperative course and was discharged 5 d after the operation. She has remained healthy and symptom-free during 4 years of follow-up. This was considered to be an unusual case of preoperatively diagnosed and laparoscopically treated small-bowel obstruction due to MD in a young adult woman.

Comparisons of financial and short-term outcomes between laparoscopic and open hepatectomy: benefits for patients and hospitals.

PURPOSES: This retrospective analysis compared the cost outcomes for both patients and hospitals, as well as the short-term outcomes, for laparoscopic hepatectomy (LH) and open hepatectomy (OH). METHODS: The subjects comprised 70 patients who underwent LH or OH. The total hospital charge was calculated using the Japanese lump-sum payment system according to the diagnosis procedure combination. RESULTS: Of the 70 patients, 10 in the LH group and 16 in the OH group underwent primary single limited/anatomic resection or left lateral sectoriectomy. The operation time, blood loss, and postoperative complications did not differ significantly between the two groups. The median [range] time of inflow occlusion was significantly longer [120 (50-194) vs. 57 (17-151) min, P = 0.03] and the postoperative hospital stay was significantly shorter [5 (4-6) vs. 9 (5-12) days, P < 0.01] in the LH group than in the OH group, respectively. The mean ± standard deviation surgical costs (1307 ± 596 vs. 1054 ± 365 US$, P = 0.43) and total hospital charges (12046 ± 1174 vs. 11858 ± 2096 US$, P > 0.99) were similar in the LH and OH groups, respectively, although the charges per day were significantly higher in the LH group than in the OH group (1388 ± 217 vs. 1016 ± 134 US$, P < 0.01). CONCLUSIONS: The costs to patients for LH are similar to those for OH. However, LH provides a financial advantage to hospitals due to a reduced hospital stay and comparable surgical costs.