Yukio Iwashita
Oita University
CancerInternal medicineRadiologyEndocrinologySurgeryPathologyMolecular biologyResectionMedical physicsHepatectomyGallbladderCirrhosisCarcinomaHepatocellular carcinomaPancreasMetastasisLaparoscopic cholecystectomyAcute cholecystitisGeneral surgeryMedicineBiologyGastroenterology
101Publications
23H-index
2,127Citations
Publications 101
Newest
#1Teijiro Hirashita (Oita University)H-Index: 12
#2Yukio Iwashita (Oita University)H-Index: 23
Last. Masafumi Inomata (Oita University)H-Index: 28
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To compare the outcomes of laparoscopic radical antegrade modular pancreatosplenectomy (L-RAMPS) with those of open RAMPS (O-RAMPS) in patients with pancreatic ductal adenocarcinoma (PDAC). We reviewed, retrospectively, the medical records of 50 patients who underwent RAMPS for PDAC without resection of major vessels and adjacent organs between 2007 and 2019, and analyzed the relationship between the operative method and surgical and oncological outcomes. Nineteen of the 50 patients underwent L-...
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#1Teijiro Hirashita (Oita University)H-Index: 12
#2Yukio Iwashita (Oita University)H-Index: 23
Last. Masafumi Inomata (Oita University)H-Index: 28
view all 9 authors...
BACKGROUND Clinically relevant postoperative pancreatic fistula (CR-POPF) is a major complication of pancreatoduodenectomy (PD). A pancreatic stent is usually used for drainage of the pancreatic duct, but the best type of the stent remains unclear. The aim of this study was to investigate perioperative factors and their influence on the risk of CR-POPF following PD. METHODS From 2006 to 2019, the records of 246 patients who underwent PD were retrospectively reviewed, and the relationship between...
1 CitationsSource
#1Teijiro Hirashita (Oita University)H-Index: 12
#2Yukio Iwashita (Oita University)H-Index: 23
Last. Masafumi Inomata (Oita University)H-Index: 28
view all 8 authors...
Although the same distal pancreatectomy (DP) is performed regardless of the location of left-sided pancreatic ductal adenocarcinoma (PDAC), the clinicopathological features may differ depending on the tumor location. The present study investigated the relationship between the tumor location and clinicopathological features in patients with left-sided PDAC. The records of 59 patients who underwent DP for PDAC were enrolled. The relationship between the tumor location and clinicopathological featu...
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#1Tatsushi Tokuyasu (Fukuoka Institute of Technology)H-Index: 6
#2Yukio Iwashita (Oita University)H-Index: 23
Last. Masafumi Inomata (Oita University)H-Index: 28
view all 12 authors...
BACKGROUND: The occurrence of bile duct injury (BDI) during laparoscopic cholecystectomy (LC) is an important medical issue. Expert surgeons prevent intraoperative BDI by identifying four landmarks. The present study aimed to develop a system that outlines these landmarks on endoscopic images in real time. METHODS: An intraoperative landmark indication system was constructed using YOLOv3, which is an algorithm for object detection based on deep learning. The training datasets comprised approxima...
6 CitationsSource
#1Ruben Ciria (UCO: University of Córdoba (Spain))H-Index: 20
#2Giammauro BerardiH-Index: 19
Last. Go WakabayashiH-Index: 33
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BACKGROUND The main aim of this survey was to analyze how liver surgeons perform liver resections and to define their conception of anatomic procedures within the incorporation of minimally invasive liver surgery (MILS). METHODS The survey was distributed among liver surgeons. It mainly focused on personal experience on open and MILS, methods and landmarks, and experience on anatomic resections and Glissonean approach. RESULTS A total of 445 valid answers from 54 countries was obtained. Surgeons...
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#1Teijiro Hirashita (Oita University)H-Index: 12
#2Yukio Iwashita (Oita University)H-Index: 23
Last. Masafumi Inomata (Oita University)H-Index: 28
view all 7 authors...
BACKGROUND The treatment strategy for pancreatic metastasis (PM) from renal cell carcinoma (RCC) is unclear due to its rarity. The aim of this study was to reveal the role of surgery for PM from RCC. METHODS A systematic literature search was conducted using PubMed and the Cochrane Library. The effectiveness of surgery for PM was evaluated based on the primary outcome of overall survival (OS), which was investigated in relation to surgical procedures and metastatic sites via subgroup analyses. R...
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#1Masanao Kurata (University of Tsukuba)H-Index: 26
#2Yukio Iwashita (Oita University)H-Index: 23
Last. Masakazu YamamotoH-Index: 63
view all 35 authors...
BACKGROUND To explore best practices for acute cholecystitis, it is necessary to construct a system to assess the difficulty of laparoscopic cholecystectomy (LC) based on intraoperative findings. In this study, multiple evaluators assessed videos of LC to assemble a library of typical video clips for 25 intraoperative findings. METHODS We have previously identified 25 items that contribute to surgical difficulty in LC. For each item, roughly 30-s video clips were submitted from videos of LC perf...
1 CitationsSource
#1Ken Shiraiwa (Oita University)H-Index: 1
#2Yosuke Suzuki (Oita University)H-Index: 8
Last. Hiroki Itoh (Oita University)H-Index: 17
view all 12 authors...
Combination therapy of tegafur/uracil (UFT) and leucovorin (LV) is widely used to treat colorectal cancers. Although this therapy has a significant therapeutic effect, severe adverse effects occur frequently. Therapeutic drug monitoring (TDM) may help to prevent adverse effects. A useful assay that can quantitate plasma levels of 5-FU, uracil, and tegafur simultaneously for TDM has been desired, but such a method is not currently available. In this study, we aimed to develop a sensitive method f...
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Purpose In this systematic review, we aimed to clarify the useful anatomic structures and assess available surgical techniques and strategies required to safely perform minimally invasive anatomic liver resection (MIALR), with a particular focus on the hepatic veins (HVs). Methods A systematic review was conducted using MEDLINE/PubMed for English articles and Ichushi databases for Japanese articles through September 2020. The quality assessment of the articles was performed in accordance with th...
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#1Masakazu YamamotoH-Index: 63
#2Masahiro Yoshida (International University of Health and Welfare)H-Index: 43
Last. Tadahiro Takada (Teikyo University)H-Index: 68
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BACKGROUND Hepatectomy is standard treatment for colorectal liver metastases; however, it is unclear whether liver metastases from other primary cancers should be resected or not. The Japanese Society of Hepato-Biliary-Pancreatic Surgery therefore created clinical practice guidelines for the management of metastatic liver tumors. METHODS Eight primary diseases were selected based on the number of hepatectomies performed for each malignancy per year. Clinical questions were structured in the popu...
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