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Showing papers by "Yukihiro Yokoyama published in 2020"


Journal ArticleDOI
TL;DR: VR salvages a large number of patients from having locally advanced PHC that is otherwise unresectable and is recommended if the hilar hepatic inflow vessels are reconstructable, providing acceptable surgical outcomes and substantial survival benefits.
Abstract: OBJECTIVE To evaluate the efficacy and safety of combined vascular resection (VR) in advanced perihilar cholangiocarcinoma (PHC). SUMMARY OF BACKGROUND DATA Hepatectomy combined with portal vein resection (PVR) and/or hepatic artery resection (HAR) is technically demanding but an option only for tumor eradication against PHC involving the hilar hepatic inflow vessels; however, its efficacy and safety have not been well evaluated. METHODS Patients diagnosed with PHC during 2001-2018 were included. Patients who underwent resection were divided according to combined VR. Patients undergoing VR were subdivided according to type of VR. Postoperative outcomes and OS were compared between patient groups. RESULTS Among the 1055 consecutive patients, 787 (75%) underwent resection (without VR: n = 484, PVR: n = 157, HAR: n = 146). The incidences of postoperative complications and mortality were 49% (without VR vs with VR, 48% vs 50%; P= 0.715) and 2.1% (without VR vs with VR, 1.2% vs 3.6%; P= 0.040), respectively. The OS of patients who underwent resection with VR (median, 30 months) was shorter than that of those who underwent resection without VR (median, 61 months; P < 0.0001); however, it was longer than that of those who did not undergo resection (median, 10 months; P < 0.0001). OS was not significantly different between those who underwent PVR and those who underwent HAR (median, 29 months vs 34 months; P = 0.517). CONCLUSION VR salvages a large number of patients from having locally advanced PHC that is otherwise unresectable and is recommended if the hilar hepatic inflow vessels are reconstructable, providing acceptable surgical outcomes and substantial survival benefits.

36 citations


Journal ArticleDOI
TL;DR: It is demonstrated that preoperative physical activity levels are associated with the incidence of major postoperative complications following HPB surgery for malignancy.
Abstract: The current study was designed to investigate the association between the average preoperative physical activity and postoperative outcomes in patients undergoing surgeries for hepato-pancreato-biliary (HPB) malignancy. Patients who were scheduled to undergo open abdominal surgeries for HPB malignancies (major hepatectomy, pancreatoduodenectomy, or hepato-pancreatoduodenectomy) between 2016 and 2017 were included. The average steps per day were recorded by a pedometer and calculated for each patient during the preoperative waiting period. Physical activity levels were classified according to the average number of daily steps as poor (< 5000 steps/day) and good (≥ 5000 steps/day). Of the 105 eligible patients, 78 met the inclusion criteria. The median number of steps per day was 6174. There were 48 patients (62%) with good physical activity and 30 patients (38%) with poor physical activity. Patients with poor physical activity revealed a significantly higher rate of major complications with Clavien grade ≥ 3 (63% vs. 35%, p = 0.016), a higher rate of infectious complications (53% vs. 23%, p = 0.006), and a longer postoperative hospital stay (median, 30 vs. 21 days, p < 0.001) compared with those with good physical activity. After a multivariate analysis, poor physical activity was identified as an independent risk factor for the development of major complications (odds ratio, 2.842, p = 0.042) and infectious complications (odds ratio, 3.844, p = 0.007). The current study demonstrated that preoperative physical activity levels are associated with the incidence of major postoperative complications following HPB surgery for malignancy.

18 citations


Journal ArticleDOI
TL;DR: Recent studies have suggested that trefoil factor family 1 (TFF1) functions as a tumor suppressor in gastric and pancreatic carcinogenesis.

15 citations


Journal ArticleDOI
19 Jul 2020-Surgery
TL;DR: Almost 60% of patients with perihilar cholangiocarcinoma experience recurrence after R0 resection, and even in patients without an independent risk for recurrence, the recurrence probability is high, reaching nearly 50% at 10 years.

8 citations


Journal ArticleDOI
TL;DR: This is the first report that showed a nearly complete pathological response to AI in dedifferentiated RPLS, which was subsequently completely resected, and a 99% disappearance of tumor cells.
Abstract: Background Retroperitoneal liposarcoma (RPLS) is the most commonly observed soft tissue sarcoma in the retroperitoneal space. Although the beneficial effect of chemotherapy for RPLS is controversial, there are some reports that have shown a considerable tumor-suppressive effect of chemotherapy in RPLS. We demonstrate a case of dedifferentiated RPLS, which was initially considered inoperable but was successfully treated by neoadjuvant chemotherapy and subsequent curative resection. Case presentation A 59-year-old female was referred to our hospital with a chief complaint of right lower quadrant abdominal pain. Abdominal computed tomography revealed a large retroperitoneal tumor with a maximum diameter of 11 cm. The tumor involved retroperitoneal major vasculatures, such as the right common iliac vein and artery, as well as the right psoas muscle and femoral nerve. The right ureter was also involved and obstructed by the tumor. A biopsy was performed through the retroperitoneal route, and the tumor was diagnosed as a dedifferentiated liposarcoma with the Federation Nationale des Centres de Lutte Contre le Cancer grade 3. Because the tumor was highly invasive and complete resection was not feasible, we decided to administer neoadjuvant chemotherapy with doxorubicin and ifosfamide (AI). After completing 6 courses of AI, the tumor size was considerably reduced, and we decided to perform surgery with curative intent. Before laparotomy, femoro-femoral arterial bypass was performed to prepare for the right common iliac artery resection. Thereafter, the patient underwent laparotomy and tumor resection combined with right nephrectomy, resection of the right common iliac artery and vein, and resection of the right psoas muscle and femoral nerve. The postoperative course was uneventful, although the patient needed a walking brace to support her gait. The pathological findings indicated a 99% disappearance of tumor cells. The patient was healthy without any complaints after 1 year of surgery, and a follow-up CT scan revealed no tumor recurrence. Conclusions To the best of our knowledge, this is the first report that showed a nearly complete pathological response to AI in dedifferentiated RPLS, which was subsequently completely resected.

8 citations


Journal ArticleDOI
TL;DR: The clinical manifestations of RPTs were extremely variable and recurrence after repeating resection is commonly observed in patients with malignant retroperitoneal sarcoma.
Abstract: There are only a limited number of comprehensive reports for retroperitoneal tumors (RPTs). The aim of this study was to perform an interdepartmental data collection for RPTs and to comprehensively clarify the clinical characteristics of this rare disease. All patients who were diagnosed with RPT from January 2005 to July 2018 in a single institution were included. The analyzed factors included demographics, clinical features, treatment methods, pathological diagnosis, and prognosis. A total of 422 patients (215 males and 207 females) with primary RPTs were identified. Biopsy for RPT was performed in 180 patients (43%). Among the 422 patients, 239 (57%) underwent surgery. The most common tissue origin was mesodermal (n = 99, 41%), followed by neurogenic (n = 54, 23%), extragonadal (n = 27, 11%), and metastatic tumors (n = 13, 5%). Among the 99 resected mesodermal tumors, the most common pathological subtypes were liposarcoma (n = 55, 56%) and leiomyosarcoma (n = 16, 16%). The long-term outcomes after surgery were analyzed in patients with intermediate and malignant sarcomas (including liposarcoma, leiomyosarcoma, and others combined, n = 71). The 3- and 5-year disease-free survival rates in the intermediate tumors were 68.2% and 54.2%, respectively, whereas those in the malignant tumors were 48.6% and 28.9%, respectively. The 3- and 5-year overall survival rates in the intermediate tumors were 100% and 94.1%, respectively, whereas those in the malignant tumors were 78.4% and 72.8%, respectively (p = 0.009). The clinical manifestations of RPTs were extremely variable. Recurrence after repeating resection is commonly observed in patients with malignant retroperitoneal sarcoma.

8 citations


Journal ArticleDOI
TL;DR: Tumour marker recovery was a preferable prognostic factor in patients with PDAC who had undergone preoperative therapy, and both body mass index and tumour markers recovery were independent prognostic factors.
Abstract: BACKGROUND/PURPOSE A pathological response of the primary tumor by preoperative therapy is a prognostic factor in various malignancies, and several histologic grading systems have been proposed for pancreatic ductal adenocarcinoma (PDAC). However, the prognostic value remains unclear. We explored the clinical implication of a major pathological response following preoperative therapy in patients with PDAC. METHODS Of 415 patients with resected PDAC, 137 who had undergone preoperative therapy were examined. Cox proportional hazards models were used to determine the predictors of a major pathological response, and survival analyses were performed. RESULTS Twenty patients exhibited a major pathological response (≥90% tumor reduction). Significant associations were observed between a major pathological response and resectability (P = .001), the period of preoperative therapy (P < .001), RECIST best response (P < .001), the tumor size after preoperative therapy (P = .02), and tumor marker recovery (P < .001). Multivariate analysis of progression-free survival (PFS) revealed that both body mass index (≥20 kg/m2 ) (P = .035) and tumor marker recovery (P = .046) were independent prognostic factors. The median survival time (MST) of PFS for a ≥90% pathological response was better than that of a <90% response (P = .25); however, the MST for tumor marker recovery was significantly better than that without tumor marker recovery (P = .0054). CONCLUSIONS In our study, a major pathological response was not extracted as a prognostic factor. Rather, tumor marker recovery was a preferable prognostic factor in patients with PDAC who had undergone preoperative therapy.

7 citations


Journal ArticleDOI
TL;DR: The bow-shaped and bifurcation types are commonly observed in RPPV anatomy, in which the right posterior sector is divided into segments VI and VII, and setting the segmentation was difficult, thus it may be compelled to be arbitrarily determined.
Abstract: The border between segments VI and VII of the right posterior sector of the liver is controversial owing to lack of anatomical landmarks. This study aimed to examine the segmentation of the right posterior sector. Using three-dimensional software, ramification type of the right posterior portal vein (RPPV) was analysed in 100 patients. A bow-shaped anatomy, in which the RPPV exhibits a downward convex bow shape with several ramifications, was found in 50 patients. A bifurcation anatomy, in which the RPPV bifurcates into the cranial and caudal branches, was observed in 45 patients. In the bow-shaped anatomy, setting the segmentation was difficult due to lack of definite landmarks; thus, the downward portal branches were determined as segment VI branches, while horizontal and upward branches were determined as segment VII branches. In the bow-shaped anatomy, the incidence of full exposure of a thick branch of the right hepatic vein on virtual transection surface was 60.0%, while in the bifurcation anatomy, it was only 11.1%. No relations were observed between RPPV anatomy and main PV/right hepatic vein anatomy. The volumes of segments VI and VII were equal in both the bow-shaped and bifurcation anatomy. The bow-shaped and bifurcation types are commonly observed in RPPV anatomy. In the bifurcation anatomy, the right posterior sector is divided into segments VI and VII. In the bow-shaped anatomy, setting the segmentation was difficult, thus it may be compelled to be arbitrarily determined.

6 citations


Journal ArticleDOI
TL;DR: Patients with SDM might still be suitable to undergo salvage surgery and achieve favourable overall survival, and an HDMR should not be taken into consideration when making surgical plans.
Abstract: Background The role of surgery for locally recurrent rectal cancer (LRRC) with resectable distant metastases or second LRRC remains unclear. This study aimed to clarify the influence of synchronous distant metastases (SDMs), a history of distant metastasis resection (HDMR), and a second LRRC on the outcome. Methods The long-term outcomes of 70 surgically treated patients with LRRC between 2006 and 2018 were compared by SDM (n = 10), HDMR (n = 17), and second LRRC (n = 7). Results Among the 10 patients with SDM, 4 patients underwent simultaneous resection, whereas the other 6 underwent staged resection with distant first approach. Recurrence developed in 9 patients, of which 2 patients with liver re-resection achieved long-term survival without cancer. The patients with and without SDM had equivalent 5-year overall survival rate (40.5% vs. 53.3%, p = 0.519); however, patients with SDM had a worse 3-year recurrence-free survival rate than those without SDM (10.0% vs. 37.5%, p = 0.031). Multivariate analysis showed that primary non-sphincter-preserving surgery, second LRRC, and R1 resection were independent risk factors for overall survival. Similarly, primary non-sphincter-preserving surgery, second LRRC, SDM, and R1 resection were risk factors for recurrence-free survival. Conclusions Patients with SDM might still be suitable to undergo salvage surgery and achieve favourable overall survival. Distant metastasectomy should be performed first, followed by a sufficient interval to avoid unnecessary LRRC resection in uncurable patients. An HDMR should not be taken into consideration when making surgical plans. Surgical indication of second LRRC should be strict, especially in referred patients.

6 citations


Journal ArticleDOI
TL;DR: R0 resection in the first surgery was considered the most important for longer recurrence-free survival and radical cure and the time to recurrence decreased and the recurrence rate increased with repeated recurrence and surgeries.
Abstract: Objective This study sought to investigate the characteristics of primary and repeated recurrent retroperitoneal liposarcoma. Methods Patients treated with primary or recurrent retroperitoneal liposarcoma between 2005 and 2018 were retrospectively reviewed. Survival time analysis of recurrence-free survival and overall survival was conducted using Kaplan-Meier analysis and log-rank test. Results Fifty-two patients with primary retroperitoneal liposarcoma were analysed. Amongst them, 46 patients (88%) had undergone surgery. Histologic grades included well-differentiated (n = 21), dedifferentiated (n = 21), myxoid (n = 3) and pleomorphic (n = 1) subtypes. The patients undergoing R0 resection in the first surgery had significantly higher recurrence-free survival rates compared with the patients undergoing non-R0 resection (3-year recurrence-free survival: 80 versus 38%; 5-year recurrence-free survival: 49 versus 29%, P = 0.033). Although overall survival rates tended to be higher in the patients undergoing R0 resection compared with the non-R0 resection, it did not reach to a statistical significant difference (5-year overall survival: 93 versus 75%; 10-year overall survival: 93 versus 59%, P = 0.124). The recurrence rates were 65, 67, 73 and 100%, and the median recurrence-free survival times were 46, 20, 9 and 3 months after the first, second, third and fourth surgeries, respectively. The 5-year overall survival rates were 82, 69, 40 and 0% after the first, second, third and fourth surgeries, respectively. Conclusions With repeated recurrence and surgeries, the time to recurrence decreased and the recurrence rate increased. R0 resection in the first surgery was considered the most important for longer recurrence-free survival and radical cure.

6 citations


Journal ArticleDOI
TL;DR: The introduction of prehabilitation (preoperative physical and nutritional support) improved nutritional status and functional exercise capacity, even in patients with malignancy, and daily physical activity was correlated with nutritional status before surgery.
Abstract: Major hepato-pancreato-biliary (HPB) surgery is one of the most invasive abdominal surgeries. Through the experiences of several clinical trials, including those involving patients undergoing major HPB surgery, we have recognized the importance of "muscle" and "intestine" training before surgery. This review article summarizes the results of our clinical trials, specifically focusing on the importance of "muscle" and "intestine". The patients with low skeletal muscle mass or those with low functional exercise capacity showed a significantly worse postoperative course and poor long-term survival after surgery for HPB malignancy. The introduction of prehabilitation (preoperative physical and nutritional support) improved nutritional status and functional exercise capacity, even in patients with malignancy. Daily physical activity was correlated with nutritional status before surgery. These results indicated the usefulness of prehabilitation. The intestinal microenvironment, which is extrapolated from the fecal concentrations of short-chain fatty acids (SCFAs), showed a significant association with the incidence of surgery-induced bacterial translocation and postoperative infectious complications (POICs). The use of perioperative synbiotics not only increased the fecal levels of SCFAs but also prevented the incidence of POICs. A recent study also indicated that there are correlations between muscle mass and the intestinal microenvironment. Further investigation is required to determine the best "muscle" and "intestine" training protocol to improve the outcomes of major HPB surgeries.

Journal ArticleDOI
TL;DR: Cumulative postoperative complications after resection of perihilar cholangiocarcinoma only moderately deteriorate long-term survival, and should not be an argument to deny surgery in this high risk population.
Abstract: Objective To evaluate the impact of complications on long-term survival in patients with perihilar cholangiocarcinoma. Background Surgical resection for perihilar cholangiocarcinoma is vulnerable to postoperative complications. The prognostic impact of complications in patients with this disease is unknown. Methods The medical records of patients who underwent curative-intent hepatectomy for perihilar cholangiocarcinoma between 2010 and 2017 were reviewed retrospectively. The comprehensive complication index (CCI) was calculated based on all postoperative complications, which were graded by the Clavien-Dindo classification (CDC). Patients were divided into high and low CCI groups by the median score, and survival was compared between the two groups. Results Excluding 8 patients who died in hospital, 369 patients were analyzed. The CDC grade was I in 20 (5.4%), II in 108 (29.3%), III in 224 (60.7%), and IV in 17 (4.6%) patients. The CCI increased with increasing CDC grade; the median was 42.9 (range, 15.0-98.9). Overall survival (OS) differed significantly between the high (n = 187) and low (n = 182) CCI groups (41.2% versus 47.9% at 5 years; p = 0.041). However, multivariable analyses demonstrated that traditional clinicopathological factors were independent predictors of survival and that the dichotomized CCI was not. In addition, the CCI score as a continuous variable was not an independent prognostic factor for OS in the multivariable analyses (hazard ratio per 1 CCI score: 1.00, 95% confidence interval: 0.99-1.01, p = 0.775). Conclusion Cumulative postoperative complications after resection of perihilar cholangiocarcinoma only moderately deteriorate long-term survival, and should not be an argument to deny surgery in this high risk population.

Journal ArticleDOI
01 Jun 2020-Surgery
TL;DR: The incidence of postoperative infectious complications caused by multidrug-resistant pathogens in patients undergoing major hepatectomy with extrahepatic bile duct resection is high, approximately 10%, and this troublesome complication is closely associated with postoperative death.

Journal ArticleDOI
TL;DR: The aim was to validate the predictive performance of this system using a Japanese cohort, which has been used for local tumor assessment in perihilar cholangiocarcinoma to predict resectability and survival.
Abstract: BACKGROUND The Blumgart system has been used for local tumor assessment in perihilar cholangiocarcinoma to predict resectability and survival, and T3 tumors are considered unresectable disease. The aim was to validate the predictive performance of this system using a Japanese cohort. METHODS Medical records of consecutive patients with perihilar cholangiocarcinoma between 2006 and 2016 were retrospectively reviewed. Resectability, surgical procedure, R0 resection rate, and survival were compared among T stages. RESULTS Among 729 study patients, 191 patients had T1 tumors, 94 patients had T2 tumors, and 444 (60.9%) patients had T3 tumors according to the Blumgart T stage. Resection was performed in 513 (70.4%) patients; resectability rate decreased with the progression of T stage: 89.0% in T1, 79.8% in T2, and 60.4% in T3 tumors (P < 0.001). The incidences of left hepatic trisectionectomy and portal vein resection were 44.0% and 54.1%, respectively, in patients with T3 tumors, which were significantly greater than those of T1/2 tumors (P = 0.001 and P < 0.001). R0 resection reduced with advanced T stage: 92.4% in T1, 81.3% in T2, and 70.9% in T3 tumors (P < 0.001). The 5-year survival rate was 53.4%, 38.4%, and 19.7% in T1, T2, and T3 tumors, respectively (P < 0.001); that was 59.6%, 48.6%, and 30.7%, respectively, in the resected cohort (P < 0.001). CONCLUSION Blumgart T stage was closely associated with the resectability rate, surgical procedures, R0 resection rate, and survival time, suggesting that the T stage works as well as a presurgical staging system. However, the unresectable classification of T3 tumors should be revised.

Journal ArticleDOI
01 Nov 2020-BMJ Open
TL;DR: This study aims to investigate the effect of TXA on blood loss during PD, a major gastroenterological surgery that results in a substantial amount of blood loss, by randomly assigning patients to the TXA or placebo group.
Abstract: Introduction Pancreaticoduodenectomy (PD) is a major gastroenterological surgery that results in a substantial amount of blood loss. Several studies have demonstrated that major blood loss during PD is associated with both short-term and long-term poor outcomes. Administration of perioperative tranexamic acid (TXA) has been reported to reduce intraoperative blood loss in various surgeries, including cardiovascular surgery and orthopaedic surgery. Nevertheless, the effect of perioperative TXA use in patients undergoing PD has not been investigated. This study aims to investigate the effect of TXA on blood loss during PD. Methods and analysis A multicentre (six hospitals), randomised, blind (patient-blinded, surgeon-blinded, anaesthesiologist-blinded, monitor-blinded), placebo-controlled trial of TXA during PD was started in September 2019. Patients undergoing PD for biliary, duodenal or pancreatic diseases are randomly assigned to the TXA or placebo group. The stratification factors are the institutions and preoperative clinical diagnosis. Before skin incision, the participants in TXA group are administrated 1 g TXA as a loading infusion followed by a maintenance infusion of 125 mg/hour TXA until the end of surgery or 8 hours from the incision. Participants in the placebo group are administrated the same volume of saline that is indistinguishable from the TXA. The primary outcome is blood loss during PD. The secondary outcomes are intraoperative and postoperative (up to day 2) blood transfusions, operation time, anaesthesia time, postoperative laboratory variables, length of hospital stay, in-hospital and 90-day mortality and postoperative complications occurring within 28 days of surgery or requiring readmission. To date, 115 patients of a planned 220 have been enrolled in the study. Ethics and dissemination This protocol was approved by the Nagoya University Clinical Research Review Board and is registered with Japan Registry of Clinical Trials on 15 August 2019. The results of this trial will be disseminated through peer-reviewed journals. Trial registration number jRCTs041190062.

Journal ArticleDOI
11 Apr 2020-Hpb
TL;DR: Thickness of the upper abdominal cavity had a significant influence on gastrojejunal anatomic position and the development of CR-DGE after pancreatoduodenectomy.
Abstract: Background We aimed to investigate the hypothesis that preoperative thickness of the abdominal cavity influenced on the gastrojejunostomy position and the incidence of delayed gastric emptying (DGE) after pancreatoduodenectomy. Methods Between January 2009 and December 2018, consecutive patients who underwent subtotal stomach-preserving pancreatoduodenectomy were retrospectively reviewed. Thickness of the abdominal cavity at the level of the celiac axis (TACC) and umbilicus (TACU) were measured using computed tomography before surgery. The ventral deviation of the gastrojejunostomy was evaluated as the sagittal fundus anastomotic angle (SFAA) using sagittal computed tomography images taken after surgery. Results A total of 281 patients were included. Of these, clinically relevant DGE (CR-DGE) was observed in 47 patients. TACC was significantly correlated with SFAA (R = 0.53, P 110 mm (odds ratio, 3.07; p = 0.002) and pancreatic fistula (odds ratio, 2.71; p = 0.013) were identified as independent risk factors for CR-DGE. Conclusion Thickness of the upper abdominal cavity had a significant influence on gastrojejunal anatomic position and the development of CR-DGE after pancreatoduodenectomy.

Journal ArticleDOI
TL;DR: The benefit of steroid administration for patients undergoing ‘‘complex’’ hepatectomy such as major hepATEctomy (resection of more than three segments) with extrahepatic bile duct resection is still unclear.
Abstract: Major hepatectomy still involves a long operation and considerable blood loss, which is associated with a potential risk for postoperative adverse events such as liver failure. It has been reported that perioperative use of steroids may reduce adverse events. To date, five randomized controlled trials (RCT) have assessed the clinical benefit of perioperative steroid administration in hepatectomy. However, all of these trials involved a substantial number of ‘‘minor’’ hepatectomies, such as a partial hepatectomy or segmental hepatectomy. The benefit of steroid administration for patients undergoing ‘‘complex’’ hepatectomy such as major hepatectomy (resection of more than three segments) with extrahepatic bile duct resection is still unclear.

Journal ArticleDOI
TL;DR: In “anatomic” right hepatic trisectionectomy for advanced perihilar cholangiocarcinoma, the left hepatic duct is completely detached from the UP after all division of the portal branches arising cranially from the Up, but little is known about these thin portal branches.
Abstract: In “anatomic” right hepatic trisectionectomy for advanced perihilar cholangiocarcinoma, the left hepatic duct is divided at the left side of the umbilical portion (UP) of the left portal vein (LPV). For this reason, the left hepatic duct is completely detached from the UP after all division of the portal branches arising cranially from the UP. However, little is known about these thin portal branches. Using 3D imaging processing software, we examined the portal branches arising cranially from the UP of the LPV in 100 patients who underwent multidetector row computed tomography (MDCT). Special attention was paid to the portal branch running to the left lateral sector, designated as the left cranio-lateral branch. The left cranio-lateral portal branch number was 0 in 57 patients, 1 in 32 patients, and 2 in 11 patients. Thus, 54 left cranio-lateral branches were identified, arising from near the cul-de-sac of the UP, from near the elbow of the LPV, or from the UP trunk. The median volume of the territory supplied by the left cranio-lateral portal branch was 21 mL (range, 5–47 mL), and the median ratio to the left lateral sector was 11.8% (range, 1.7–25.0%). Approximately 40% of patients had the left cranio-lateral portal branches arising cranially from the UP and running to the left lateral sector. When planning anatomic right hepatic trisectionectomy, the presence or absence of this branch should be checked by using 3D imaging with MDCT.

Journal ArticleDOI
TL;DR: No studies have investigated the importance of daily physical activity before surgery in terms of short-term outcomes after major HPB surgery, which is accompanied by a higher rate of postoperative complications compared with surgery for colorectal or breast cancer.
Abstract: Daily physical activity has been shown to have an impact on short-term recovery after surgery for colorectal cancer and breast cancer. However, these studies only evaluated physical activity by an interview, thus the obtained data were subjective and not scientifically relevant. It may be better to evaluate patients’ daily physical activity by more objective methods. Therefore, in this study, we asked patients to carry a pedometer whenever they woke up, and objectively measured their daily physical activity. To date, no studies have investigated the importance of daily physical activity before surgery in terms of short-term outcomes after major HPB surgery, which is accompanied by a higher rate of postoperative complications compared with surgery for colorectal or breast cancer. Therefore, in our study, we selected only patients undergoing highly invasive HPB surgery for malignancy. We calculated the average daily steps per day and used a cut-off value of 5000 steps per day to dichotomize patients with poor and good physical activity. PRESENT

Journal ArticleDOI
TL;DR: This work aims to provide real-time information about the immune suppression mechanisms of central giant cell granuloma and its role in the development and spread through the immune system.
Abstract: Masaya Suenaga, MD, Yukihiro Yokoyama, MD, and Tsutomu Fujii, MD Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan; Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan; Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan

Journal ArticleDOI
01 Nov 2020-Pancreas
TL;DR: The toxicity and tolerability of FOLFIRINOX for recurrence after pancreatic resection were similar to those for locally advanced or metastatic disease with appropriate patient selection and dose modifications.
Abstract: Objectives The multidrug regimen with fluorouracil, leucovorin, irinotecan, and oxaliplatin (FOLFIRINOX) is widely used for recurrent pancreatic cancer after pancreatic resection. However, there are concerns about severe toxicities and poor tolerability of FOLFIRINOX in these patients because some suffer from surgery-associated malnutrition, weight loss, and diabetes mellitus. We evaluated the toxicity and tolerability of FOLFIRINOX in these patients. Methods This study was conducted as a secondary analysis of the Japan Adjuvant Study Group of Pancreatic Cancer 06 study, which was a multicenter observational study of FOLFIRINOX for pancreatic cancer in Japan. The toxicity and tolerability of FOLFIRINOX in recurrent disease correlated with those of both the locally advanced and the metastatic disease group. Results The major grades 3 and 4 toxicities observed in the recurrent and locally advanced or metastatic disease groups were neutropenia (68% vs 63%), febrile neutropenia (4% vs 15%, P = 0.007), thrombocytopenia (4% vs 3%), diarrhea (4% vs 8%), and sensory neuropathy (0% vs 2%). The dose modification and relative dose intensity did not differ markedly between the groups. Conclusions The toxicity and tolerability of FOLFIRINOX for recurrence after pancreatic resection were similar to those for locally advanced or metastatic disease with appropriate patient selection and dose modifications.