Hybrid esophagogastric tube anastomosis after minimally invasive McKeown esophagectomy to prevent stenosis in patients with esophageal cancer.

PURPOSE: The use of a small circular stapler has been reported to increase the incidence of benign anastomotic stenosis in reconstruction. In circular stapling anastomosis after esophagectomy, the anastomotic lumen is dependent on the size of the esophagus and the replacement organ. We developed a new and foolproof method to prevent stenosis in esophagogastric tube anastomosis for patients with esophageal cancer that is not dependent on operator skill. METHODS: Seven patients with esophageal squamous cell carcinoma underwent minimally invasive McKeown esophagectomy in our hospital. Esophagogastric tube anastomosis was tried for all patients using the novel "hybrid esophagogastric tube anastomosis" technique. A 21-mm circular stapler was applied to perform an end-to-side anastomosis between the cervical esophagus and the posterior wall of the gastric tube. Then, a 30-mm linear stapler was positioned in the esophagogastric anastomosis formed by the 21-mm circular stapler with the anvil fork inserted into the esophagus and the cartridge fork inserted into the gastric tube. A supplementary side-to-side anastomosis of appropriately 15 mm was created. Afterward, the entry hole was closed with a linear stapler. RESULTS: The hybrid esophagogastric tube anastomosis was successful in all seven patients receiving it between June 2020 and March 2022. No postoperative complications related to this anastomosis were observed in any of the patients. Five patients underwent follow-up gastrointestinal endoscopy at 6 months after esophagectomy. No patient had an anastomotic stenosis. CONCLUSIONS: Hybrid esophagogastric tube anastomosis can be performed easily and safely and can reduce the complications associated with anastomosis.

Development of an artificial portal vein using bioabsorbable polymers.

PURPOSE: During surgical resection of malignant tumors in the hepatobiliary pancreatic region, portal vein resection and reconstruction may be needed. However, there is no alternative to the portal vein. We therefore developed an artificial portal vein that could be used in the abdominal cavity. METHODS: In the experiments, hybrid pigs (n = 8) were included. An artificial portal vein was created using a bioabsorbable polymer sheet (BAPS). Subsequently, the portal vein's anterior wall was excised into an elliptical shape. A BAPS in the form of a patch was implanted at the same site. At 2 weeks (n = 3) and 3 months (n = 5) after the implantation, the BAPS implantation site was resected and evaluated macroscopically and histopathologically. RESULTS: Immediately after the implantation, blood leakage was not detected. Two weeks after implantation, the BAPS remained, and endothelial cells were observed. Thrombus formation was not observed. Three months after implantation, the BAPS had been completely absorbed and was indistinguishable from the surrounding portal vein. Stenosis and aneurysms were not observed. CONCLUSIONS: BAPS can replace a defective portal vein from the early stage of implantation to BAPS absorption. These results suggest that it can be an alternative material to the portal vein in surgical reconstruction.

[A Case of pagetoid Carcinoma of the Breast with Pathological Complete Response by Neoadjuvant Chemotherapy].

We herein report a 63-year-old woman who presented with about 20 mm-sized mass in the right breast and the right nipple with erosion. Preoperative examinations revealed a diagnosis of HER2-type pagetoid carcinoma with axillary lymph node metastasis. After neoadjuvant chemotherapy(pertuzumab, trastuzumab, and docetaxel, followed by adriamycin and cyclophosphamide), a pathological complete response was achieved. The patient was treated with anti-HER2 therapy without recurrence.

[A Case of Robotic Abdominoperineal Resection for Rectal Cancer with Leriche Syndrome].

We report a case of robotic abdominoperineal resection for rectal cancer with Leriche syndrome. Case: A 75-year-old male. Colonoscopy, which was performed due to persistent diarrhea, revealed type 2 lower rectal circumferential tumor. Pathological examination revealed adenocarcinoma. Computed tomography revealed no distant metastasis, and incidentally complete occlusion from the abdominal aorta to both common iliac arteries. He was diagnosed to rectal cancer(RbRaP, cT3N0M0, cStage Ⅱa)with Leriche syndrome. Therefore, robotic abdominoperineal resection(D3 dissection)was performed. There was no complication, and he was discharged 15 days after surgery. Postoperative pathological examination revealed pT3N1asM0, pStage Ⅲb.

[A Case of Perforated Rectal Cancer with Laparoscopic Low Anterior Resection].

We report a case of perforated rectal cancer with laparoscopic low anterior resection. Case: A 60-year-old man was transported to the hospital with a chief complaint of sudden lower abdominal pain. Computed tomography revealed wall thickening of the upper rectum and free air localized around the rectum and fecal mass in the mesorectum. He was diagnosed with perforated rectal cancer. Because of the early onset, young age, and ascites confined to the pelvic floor, we decided to perform laparoscopic low anterior resection(D3 dissection). Intraabdominal observation revealed tumor in the upper rectum with a large rectal perforation 3 cm proximal to the tumor. By using gauze and suction, we were able to complete the surgery with ingenuity laparoscopically. The postoperative course was good, and he was discharged 9 days after surgery. Postoperative pathological examination revealed pT4apN0sM0, pStage Ⅱb. Adjuvant chemotherapy of 8 courses of capecitabine was performed. There has been no recurrence 3 years after surgery.

[A Case of Long-Term Survival Achieved by Multimodal Treatments for Postoperative Lung Metastasis and Mediastinal Lymph Node Metastasis after Surgery for Ascending Colon Cancer].

A 52-year-old male patient with Stage Ⅲc ascending colon cancer underwent laparoscopic right hemicolectomy with D3 lymph node dissection. Adjuvant chemotherapy was administered for 6 months, and no recurrence was observed during the follow-up period. Left lung metastasis was detected and surgically removed 7 years after the initial surgery. He underwent open partial small bowel resection with lymph node dissection when mesenteric lymph node metastasis was identified 2 years later. Although chemotherapy was conducted on the identification of mediastinal lymph node metastasis 2 years later, the mediastinal lymph nodes increased. Although attempted, lymph node dissection was impossible because of the strong adhesion to the trachea. Subsequently, chemotherapy and radiation therapy were administered. However, an infiltration of the mediastinal lymph nodes into the trachea was observed. The patient underwent bronchoscopic laser tumor ablation. The patient died 4 months after the resumption of chemotherapy(18 years after the initial surgery). Mediastinal lymph node recurrence after curative resection for colon cancer is a rare clinical condition. Nevertheless, long-term survival could be achieved by multimodal treatments in such patients.

Ruptured ileocolic artery pseudoaneurysm after laparoscopic appendectomy for acute appendicitis.

BACKGROUND: A pseudoaneurysm of the splanchnic vessels is considered to be rare, and in particular, very few cases of pseudoaneurysm in the ileocolic artery are reported. Here, we report a case of rupture of a pseudoaneurysm of the appendicular branch of the ileocolic artery after laparoscopic appendectomy. CASE PRESENTATION: A 52-year-old man was diagnosed as having phlegmonous appendicitis, and an emergency laparoscopic appendectomy was performed. Bleeding from the inter-appendicular ligament during detachment of adhesions was stopped by white coagulation and Z-suture, and the inter-appendicular ligament was treated. The postoperative course was uneventful, and there were no adverse events or findings suggestive of abscess formation. On postoperative day 30, he presented with a ruptured pseudoaneurysm of the appendicular branch of the ileocolic artery. A definitive diagnosis was made by computed tomography, and emergency interventional radiology was performed with hemostasis achieved by coiling. The patient's postprocedure course was favorable, and he was discharged with no adverse events, such as intestinal ischemia. CONCLUSIONS: We experienced a case of delayed pseudoaneurysm rupture after laparoscopic appendectomy. Care must be taken when handling the appendicular artery during the procedure, and the potential for pseudoaneurysm formation should be considered at postoperative follow-up.

Validity and safety of laparoscopic gastrectomy with D1+ lymphadenectomy for very elderly advanced gastric cancer patients; retrospective cohort study.

BACKGROUND: It remains unclear whether laparoscopic gastrectomy with optimal lymphadenectomy is appropriate for very elderly patients with advanced gastric cancer. This study aimed to assess the validity of laparoscopic gastrectomy with D1+ lymphadenectomy performed for advanced gastric cancer in patients aged 80 years or more. METHODS: Included in this retrospective study were 122 patients who underwent curative laparoscopic gastrectomy for advanced gastric cancer between 2013 and 2018. All patients over 80 years old underwent laparoscopic gastrectomy with D1+ lymphadenectomy. We divided patients by age between those who were very elderly (age ≥ 80 years; very elderly group [n = 57]) and those who were non-very elderly (age < 80 years; control group [n = 65]), and we compared patient and clinicopathological characteristics, intraoperative outcomes, and short- and long-term outcomes between the two groups. We also performed multivariate analyses to identify predictors of postoperative prognosis. RESULTS: Eastern Cooperative Oncology Group Performance Status of grade 2 or higher and mean Charlson comorbidity index score and body mass index were significantly different between the very elderly group and the control group. Adjuvant chemotherapy was used in relatively few very elderly group patients. Operation time, blood loss volume, and postoperative morbidity and mortality did not differ between the two groups. The overall survival and disease-specific survival rate of very elderly group patients with the Charlson comorbidity index score of <3 was not significantly different from that of the control group patients. CONCLUSION: The treatment of advanced gastric cancer by laparoscopic gastrectomy with D1+ lymphadenectomy to be both safe and effective in the very elderly group patients with the Charlson comorbidity index score of <3.

Emergency appendectomy versus elective appendectomy following conservative treatment for acute appendicitis: a multicenter retrospective clinical study by the Japanese Society for Abdominal Emergency Medicine.

PURPOSE: To establish the best treatment strategy for acute appendicitis. METHODS: We collected data on 2142 appendectomies performed in 2017 and compared the backgrounds and surgical outcomes of patients who underwent early surgery (ES) (< 48 h) with those managed with non-ES (> 48 h). We performed a risk factor analysis to predict postoperative complications and subgroup analysis to propose a standard treatment strategy. RESULTS: The incidence of postoperative complications was significantly higher in the ES group than in the non-ES group, and significantly lower in the laparoscopic surgery group than in the laparotomy group. Surgical outcomes, including the incidence of postoperative complications, were comparable after acute surgery (< 12 h) and subacute surgery (12-48 h), following antibiotic treatment. The risk factors for postoperative complications in the ES group were a higher age, history of abdominal surgery, perforation, high C-reactive protein level, histological evidence of gangrenous or perforated appendicitis, a long operation time, and intraoperative complications. The risk factors for postoperative complications in the non-ES group were perforation and unsuccessful conservative treatment. CONCLUSIONS: Non-early appendectomy is feasible for acute appendicitis but should be applied with care in patients with risk factors for postoperative complications or failure of pretreatment, including diabetes mellitus, abscess formation, and perforation.

Evaluating the burden of the COVID-19 pandemic on patients with colorectal cancer.

After the emergence of the coronavirus disease 2019 (COVID-19) pandemic, individuals needing medical help preferred to not go to the hospital to avoid the risk of severe acute respiratory syndrome coronavirus 2 infection. The present study investigated the influence of the COVID-19 pandemic on patients with colorectal cancer. Patients with colorectal cancer treated between January and December 2019 were classified as the pre-pandemic group (pre-group) and those treated between April 2020 and March 2021 as the post-pandemic group (pandemic group). The clinicopathologic features of patients who underwent surgery for colorectal cancer in the two groups were retrospectively compared. A total of 161 patients were enrolled: 79 In the pre-group and 82 in the pandemic group. Although no significant differences were observed in tumor location and surgical procedure between the two groups, circumferential lesions (P<0.001), colorectal stenting (P=0.016) and Stage IV classification (P=0.019) had a higher frequency in the pandemic group compared with the pre-group; additionally, surgical curability was significantly lower (P=0.036) in the pandemic group. The spread of COVID-19 has increased the incidence of patients with advanced colorectal cancer. To reduce this incidence, healthcare professionals should inform the general public not only about the risk of COVID-19, but also about the increased incidence of advanced colorectal cancer after the pandemic.

Double tract-like gastric tube reconstruction decreases the incidences of delayed gastric emptying and bile reflux after esophagectomy: results of a pilot study of an experimental technique.

PURPOSE: Esophagectomy with gastric tube reconstruction is often complicated postoperatively by duodenogastric reflux and/or delayed gastric emptying and the accompanying symptoms, leading to patients being dissatisfied with their quality of life (QOL). Medical interventions to relieve patients of their symptoms are rarely effective. We began, in 2018, performing double tract-like gastric tube reconstruction, and, in a pilot study, we compared postoperative QOL between patients in whom this experimental reconstruction was performed and those in whom conventional reconstruction was performed. METHODS: Included in the study were 33 patients who underwent thoracoscopic McKeown esophagectomy with two- or three-field lymph node dissection for thoracic esophageal cancer between April 2015 and March 2020. A gastric tube about 4 cm in width was created in all patients, and in 14 of the patients (DT group), a double tract was appended by anastomosing the elevated jejunum to the anterior wall of the gastric tube, QOL was assessed 10-14 months later by means of the DAUGS-32 questionnaire, and bile reflux and the presence or absence of food residue were assessed by upper gastrointestinal endoscopy. RESULTS: DAUGS-32 food passage dysfunction, nausea and vomiting, and reflux symptoms scores were significantly lower in the DT group than in the conventional reconstruction group. There was no significant between-group difference in the incidence of postoperative complications. No food residue was seen in DT patients' gastric tube, and no reflux esophagitis was observed. CONCLUSION: Double tract-like gastric tube reconstruction shows promise as an effective means of improving patients' post-esophagectomy QOL.

Randomized phase III trial of intravenous and intraperitoneal paclitaxel with S-1 versus gemcitabine plus nab-paclitaxel for pancreatic ductal adenocarcinoma with peritoneal metastasis (SP study).

The prognosis of pancreatic ductal carcinoma (PDAC) with peritoneal metastasis remains dismal. Systemic chemotherapy alone may not be effective, and the combination of intraperitoneal chemotherapy with systemic chemotherapy is expected to prolong the overall survival in patients with peritoneal metastasis. We have designed a randomized phase III trial to confirm the superiority of intravenous (i.v.) and intraperitoneal (i.p.) paclitaxel (PTX) with S-1 relative to gemcitabine plus nab-PTX (GnP), which is the current standard therapy for patients with metastatic PDAC. A total of 180 patients will be accrued from 30 institutions within 3 years. Patients will be randomly assigned in a 1:1 ratio to receive either i.v. and i.p. PTX with S-1 or GnP (target of 90 patients per group). The primary endpoint is overall survival; secondary endpoints are progression-free survival, response rate, proportion with negative peritoneal washing cytology during chemotherapy, proportion requiring conversion surgery, and adverse event profiles. Japan Registry of Clinical Trials jRCTs051180199 ( https://jrct.niph.go.jp/ ).

[A Case in Which a Laparotomy Transition, in a Patient with Sigmoid Colon Cancer, Prevented Peritoneal Metastasis from Being Missed].

We report a case of laparoscopic sigmoidectomy for sigmoid colon cancer where a laparotomy transition prevented peritoneal metastasis from being missed. Case: A 64-year-old woman was diagnosed with sigmoid colon cancer. Computed tomography revealed a large bowel obstruction and a 12 mm wide basal bulge in the gallbladder. A laparoscopic sigmoidectomy( D3 dissection)was first performed, and intra-abdominal observation revealed no disseminated nodules. A laparoscopic cholecystectomy was performed continuously but, due to strong adhesions, a laparotomy was administered. Three disseminated nodules were observed in the omentum during the laparotomy and a postoperative pathological examination revealed pT4aN1b(2/23)M1c1(P2), pStage Ⅳc. Adjuvant chemotherapy of 8 courses of CAPOX was performed and there has been no recurrence 20 months after surgery.

[A Case of Locally Advanced Rectal Cancer Treated Successfully with TNT].

Local control is important in the treatment of locally advanced rectal cancer(LARC). In Western countries, the standard therapy for LARC is preoperative chemoradiotherapy(CRT)followed by total mesorectal excision. Recently, addition of intensive chemotherapy to CRT known as total neoadjuvant therapy(TNT)is increasing. We herein report a 69-year-old woman who developed LARC(cT3N3M0, cStage Ⅲc). She was diagnosed as clinical complete response after TNT, and she chose"watch and wait". She did not have a recurrence for 16 months.

[A Case of Rectal Cancer with Bladder Invasion Performed with Robot-Assisted Low Anterior Resection after TNT].

A 73-year-old woman was admitted with a chief complaint of weight loss. Colonoscopy revealed rectal cancer. After the placement of a colonic stent, the patient was referred to our department. Computed tomography, magnetic resonance imaging, and cystoscopy indicated extensive invasion of the bladder. Since total pelvic exenteration was necessary at the first diagnosis, total neoadjuvant therapy(TNT)was conducted. The diagnosis after TNT was ycT4bycN0ycM0. Low anterior resection with partial resection of the bladder and a diverting ileostomy were performed. The patient was discharged on the 16th day post-surgery with a good postoperative course. The pathological examination revealed a complete response, ypT0ypN0.

Alimentary tract obstruction attributed to use of barbed suture for double tract reconstruction after robot-assisted proximal gastrectomy: a case report.

BACKGROUND: Anastomotic stenosis following esophagojejunostomy reconstruction by the overlap method with absorbable barbed sutures occurs only rarely in patients who have undergone laparoscopic surgery. We report anastomotic stenosis by the overlap method that we attributed to the lack of tactile sensation during robot-assisted surgery. CASE PRESENTATION: An 83-year-old man underwent robot-assisted laparoscopic proximal gastrectomy and lymph node dissection at our hospital for treatment of gastric cancer. Double tract reconstruction followed with side-to-side esophagojejunostomy (overlap method) performed with an endoscopic linear stapler. On completion of the anastomosis, the enterotomy was closed under robotic assistance with absorbable barbed suture. Once solid foods were introduced, the patient had difficulty swallowing and felt as though his digestive tract was stopped up. When upper gastrointestinal endoscopy was performed, we found the anastomotic lumen to be coated with food residue. After rinsing off the residue with water, we could see barbed suture protruding into the anastomotic lumen that had become entangled upon itself, which explained how the food residue had accumulated. We cut the entangled suture under endoscopic visualization using a loop cutter. CONCLUSION: This case highlights a stricture caused by insufficiently tensioning barbed suture, which subsequently protruded into the anastomotic lumen and became entangled upon itself. We believe this occurrence was associated with the lack of tactile sensation in robot-assisted surgery.

Mortality, morbidity, and failure to rescue in hepatopancreatoduodenectomy: An analysis of patients registered in the National Clinical Database in Japan.

BACKGROUND: The high operative mortality rate after hepatopancreatoduodenectomy (HPD) is still a major issue. The present study explored why operative mortality differs significantly due to hospital volume. METHOD: Surgical case data were extracted from the National Clinical Database (NCD) in Japan from 2011 to 2014. Surgical procedures were categorized as major (≥2 sections) and minor (<2 sections) hepatectomy. Hospitals were categorized according to the certification system by the Japanese Society of Hepato-Biliary-Pancreatic Surgery (JSHBPS) based on the number of major hepato-biliary-pancreatic surgeries performed per year. The FTR rate was defined as death in a patient with at least one postoperative complication. RESULTS: A total of 422 patients who underwent HPD were analyzed. The operative mortality rates in board-certified A training institutions, board-certified B training institutions, and non-certified institution were 7.2%, 11.6%, and 21.4%, respectively. Multiple logistic regression showed that certified A institutions, major hepatectomy, and blood transfusion were the predictors of operative mortality. Failure to rescue rates were lowest in certified A institutions (9.3%, 17.0%, and 33.3% in certified A, certified B, and non-certified, respectively). CONCLUSIONS: To reduce operative mortality after HPD, further centralization of this procedure is desirable. Future studies should clarify specific ways to improve the failure-to-rescue rates in certified institutions.

[A Case of Advanced Rectal Cancer with Left Hydronephrosis Treated with Left Ureter-Sparing Laparoscopic High Anterior Resection after Chemotherapy].

A 47-year-old woman with a complaint of weight loss for the past 5 months was referred to our hospital. Colonoscopy revealed advanced rectal cancer 20 cm from the anal verge. The patient had left hydronephrosis caused by ureteral invasion. Firstly, we performed transverse colostomy and left nephrostomy. After 8 courses of capecitabine, oxaliplatin plus bevacizumab( CAPOX plus Bmab)therapy, colonoscopy and computed tomography revealed shrinkage of both the primary and metastatic lesions. Laparoscopic high anterior resection was performed, and the left ureter was successfully preserved. The patient received chemotherapy after surgery. Neither local recurrence nor enlargement of metastases has been observed 8 months after surgery.

[A Case of Esophagogastric Junction Cancer Treated Successfully with Conversion Surgery after Complete Response to Nivolumab Treatment].

As shown in the ATTRACTION-2 trial, nivolumab is effective as third-line chemotherapy for advanced or recurrent gastric cancer and esophagogastric junction cancer. We report a patient with esophagogastric junction cancer who underwent conversion surgery after third-line chemotherapy with nivolumab. The patient was a 72-year-old woman. Upper gastrointestinal endoscopy revealed advanced esophagogastric junction cancer of Siewert type Ⅱ, and computed tomography revealed multiple hepatic and pulmonary metastases. The esophagogastric junction cancer was diagnosed as cT3N1M1, cStage Ⅳb, and she was administered SP as first-line and nab-PTX/RAM as second-line treatment, but progressive disease remained. Nivolumab as a third-line treatment remarkably reduced the hepatic and pulmonary metastases after its administration was initiated, and conversion surgery was performed after 28 courses. The pathological diagnosis was ypT1b2(SM2), ypN0. After discharge from the hospital, postoperative chemotherapy with nivolumab was continued in the outpatient clinic, and there has been no evidence of disease progression.

[A Case of SM Carcinoma of the Sigmoid Colon with Distant Metastasis in the Early Stage after Endoscopic MucosalResection].

INTRODUCTION: We report a case of submucosal(SM)adenocarcinoma of the sigmoid colon which developed distant metastasis 3 months after endoscopic mucosal resection(EMR). CASE: 54-year-old, male. Colonoscopy, which was performed due to positive fecal occult blood test, revealed 18 mm Isp sigmoid polyp. EMR was performed with en bloc resection. Pathological examination revealed adenocarcinoma(tub>por>sig), pT1b, Ly1c, V1a, pHM0, and pVM1. Therefore, laparoscopic sigmoidectomy(D2 dissection)was performed. Postoperative pathological examination revealed pT1b, pN2b(10/11), PN1b, pPM0, pDM0, pStage Ⅲb. Distant nodal involvement were found on computed tomography 3 months after EMR, although systemic chemotherapy(mFOLFOX6 plus panitumumab 18 courses and FOLFIRI plus bevacizumab 4 courses)was performed, the patient died of liver failure caused by liver metastasis 21 months after EMR. CONCLUSION: We present a case of T1 sigmoid adenocarcinoma which developed distant metastasis 3 months after EMR with literature review.