Chikamasa Ichita

ORCID: 0000-0001-9210-7371
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About
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Research Areas
  • Esophageal and GI Pathology
  • Gallbladder and Bile Duct Disorders
  • Gastrointestinal Bleeding Diagnosis and Treatment
  • Gastric Cancer Management and Outcomes
  • Gastrointestinal disorders and treatments
  • Gastrointestinal Tumor Research and Treatment
  • Liver Disease and Transplantation
  • Pancreatic and Hepatic Oncology Research
  • Abdominal vascular conditions and treatments
  • Gastroesophageal reflux and treatments
  • Pediatric Hepatobiliary Diseases and Treatments
  • Liver Disease Diagnosis and Treatment
  • Metastasis and carcinoma case studies
  • Pancreatitis Pathology and Treatment
  • Helicobacter pylori-related gastroenterology studies
  • Neuroendocrine Tumor Research Advances
  • Infectious Aortic and Vascular Conditions
  • Eosinophilic Esophagitis
  • Diverticular Disease and Complications
  • Aortic aneurysm repair treatments
  • Medical Imaging and Pathology Studies
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Appendicitis Diagnosis and Management
  • Hemostasis and retained surgical items
  • Amoebic Infections and Treatments

Shonan Kamakura General Hospital
2015-2025

Yokohama City University
2022-2024

Kubota (Japan)
2023

Weatherford College
2023

Kitasato University
2017-2022

University Gastroenterology
2017-2022

Tsurugi Hospital
2017

Colonic diverticular bleeding is a leading cause of lower gastrointestinal bleeding, accounting for the increasing hospitalization rate in Japan. Although over-the-scope clips (OTSCs) have demonstrated favorable outcomes as an initial hemostatic method, their effectiveness rescue therapy after rebleeding from primary endoscopic hemostasis remains unclear. This study describes four patients with colonic who underwent OTSC procedure using standard methods. Immediate was achieved all cases;...

10.7759/cureus.78641 article EN Cureus 2025-02-06

Objectives: To evaluate the risks of colorectal endoscopic submucosal dissection (ESD) in older adult patients, given increasing number ESD an aging population. Methods: We conducted a retrospective cohort study using Japanese nationwide database from 2012 to 2023. Patients aged ≥60 who underwent were included. The primary outcome was overall adverse events (AEs), including in-hospital mortality, procedure-related perforation, abdominal surgery, aspiration pneumonia, and significant...

10.14309/ajg.0000000000003447 article EN The American Journal of Gastroenterology 2025-03-31

The aim of this study was to assess the effect branched-chain amino acid (BCAA) supplements on muscle strength and mass in patients with liver cirrhosis.We carried out a single-center, prospective adult cirrhotic receiving nutrition therapy at Shonan Kamakura General Hospital. A 28-day pretreatment observation period followed by 24-week treatment period. Patients who fulfilled criteria received one package oral BCAA supplement powder twice day response evaluated. responder defined as patient...

10.1097/meg.0000000000000968 article EN European Journal of Gastroenterology & Hepatology 2017-10-03

BACKGROUND Esophageal variceal bleeding is a severe complication associated with liver cirrhosis and typically necessitates endoscopic hemostasis. The current standard treatment ligation (EVL), Western guidelines recommend antibiotic prophylaxis following However, given the improvements in prognosis for due to advancements management of treatments global concerns regarding emergence multidrug-resistant bacteria, there need reassess use routine after AIM To evaluate effectiveness patients...

10.3748/wjg.v30.i3.238 article EN cc-by-nc World Journal of Gastroenterology 2024-01-18

Abstract Background and Aim The appropriate duration of antimicrobial therapy for acute cholangitis (AC) arising from multiple hilar biliary obstructions as opposed to simple obstruction in the extrahepatic bile duct has not been established. This study assessed efficacy treatments Tokyo Guidelines 2018 AC based on cause site obstruction. Methods single‐center retrospective involved patients with who underwent successful drainage completed a 7‐day or shorter treatment. Patients were...

10.1002/jgh3.13047 article EN cc-by JGH Open 2024-03-01

With the increasing use of direct oral anticoagulants (DOACs), managing these agents around endoscopic submucosal dissection (ESD) is crucial. However, due to need for a large number cases, studies examining timing resumption are lacking, resulting in varied recommendations across international guidelines. We aimed perform comparative study about DOACs after colorectal ESD using nationwide database Japan.

10.14309/ajg.0000000000003050 article EN The American Journal of Gastroenterology 2024-08-23

Gastrointestinal bleeding (GIB) is a significant public health concern, predominantly associated with high morbidity. However, there have been no reports investigating the trends of GIB in Japan using nationwide data. This study aims to identify current and issues management by assessing Japan's national We analyzed National Database sampling data from 2012 2019, evaluating annual hospitalization rates for major six types including hemorrhagic gastric ulcers, duodenal esophageal variceal...

10.3164/jcbn.23-111 article EN Journal of Clinical Biochemistry and Nutrition 2024-01-01

Short-term treatment of acute cholangitis is sufficient for cure compared with the standard duration. Whether this short-course antimicrobial therapy effective in patients positive blood cultures has not been fully investigated. This study assessed whether could achieve successful outcomes a three-day or shorter period, even culture.

10.7759/cureus.58883 article EN Cureus 2024-04-24

To assess the effects of a combination therapy with natriuretic and aquaretic drugs in cirrhotic ascites patients.

10.3748/wjg.v23.i45.8062 article EN cc-by-nc World Journal of Gastroenterology 2017-12-04

Background . Thoracic endovascular aortic repair of an aortoesophageal fistula is effective emergency treatment for patients with T4-esophageal cancer, as it prevents sudden death, and a bridge to surgery. However, the course unresectable malignant treated thoracic alone not well-known. Case Presentation We report 67-year-old Japanese man cancer who experienced chemoradiation-induced was rescued repair. He recovered after procedure survived 4 additional months management mycotic aneurysm...

10.1155/2018/9851397 article EN cc-by Case Reports in Oncological Medicine 2018-12-19

To prevent the increase of resistant bacteria, it is important to minimize use antimicrobial agents. Studies have found that administration for ≤3 days after successful endoscopic retrograde cholangiopancreatography (ERCP) appropriate. Therefore, present study aimed verify if agents can be further shortened ≤2 ERCP. We divided 390 patients with mild and moderate cholangitis who underwent technically ERCP from January 2018 June 2020 had positive blood or bile cultures into two groups:...

10.3390/jcm11102697 article EN Journal of Clinical Medicine 2022-05-10

Objectives Current guidelines recommend colonoscopy within 24 h for acute lower gastrointestinal bleeding; however, the evidence in support colonic diverticular hemorrhage (CDH) indications remains insufficient. We use a nationwide database to investigate effectiveness of early CDH. Methods conducted retrospective cohort study using Japanese Diagnosis Procedure Combination inpatient and identified patients who were admitted CDH from 2010 2017. Patients underwent on same day admission (early...

10.1111/den.14478 article EN Digestive Endoscopy 2022-11-19

We aimed to develop and validate a simple scoring system predict in-hospital mortality after endoscopic variceal ligation (EVL) for esophageal bleeding.

10.1111/den.14773 article EN Digestive Endoscopy 2024-03-11

The standard treatment duration for acute cholangitis (AC) involves a 4–7-day antimicrobial post-biliary drainage; however, recent studies have suggested that ≤ 2–3 days is sufficient. However, clinical practice frequently depends on body temperature as criterion discontinuing treatment. Therefore, in this study, we assessed whether patients with AC can achieve successful outcomes 7-day treatment, even fever, assuming the infection source effectively controlled. We conducted single-center...

10.1038/s41598-024-68999-z article EN cc-by-nc-nd Scientific Reports 2024-08-01

Bleeding can be a serious adverse event of endoscopic sphincterotomy (EST). However, the risk EST bleeding between direct oral anticoagulant (DOAC) users and those who received no antithrombotic agents has not been clarified. This study analyzed factors for after in patients on DOAC evaluated Japan Gastroenterological Endoscopy Society (JGES) guidelines gastroenterological endoscopy undergoing treatment.We retrospectively 524 treated with or drug from May 2016 to August 2019. We investigated...

10.1186/s12876-021-01980-6 article EN cc-by BMC Gastroenterology 2021-10-24

Objectives Considering that pathogens resistant to initial antibiotic therapies for cholangitis can affect mortality rates, appropriate empiric therapy is important. However, evidence regarding the influence of antibiotics in patients with who have undergone early endoscopic retrograde cholangiopancreatography (ERCP) limited, and conditions several cases improve ERCP even when are detected on time. Therefore, this study aimed assess course undergoing ERCP. Materials methods Patients (n=266)...

10.7759/cureus.18449 article EN Cureus 2021-10-03

Splenic diseases may be caused by infections and can either malignant, such as lymphoma lung cancer, or benign, hemangioma. In some cases, diagnostic uncertainty of imaging persists, image-guided splenic needle biopsy is a useful tool to avoid the disadvantages incorrect diagnosis, including performing unnecessary splenectomy not giving necessary treatment. biopsies divided into ultrasound-guided, computed tomography (CT)-guided fine-needle aspiration, core (CNB). However, few studies have...

10.1097/md.0000000000034951 article EN cc-by-nc Medicine 2023-11-17

Abstract Background Upper gastrointestinal (GI) bleeding is the most important presentation of an aorto-duodenal fistula (ADF). Early diagnosis difficult, and disease associated with high mortality. The present study aimed to examine clinical endoscopic characteristics ADF in eight patients who presented our hospital. We also sought clarify diagnostic approach towards disease. Methods examined endoscopic/computed tomography (CT) were definitively diagnosed this condition a 12-year period at...

10.1186/s12876-021-01616-9 article EN cc-by BMC Gastroenterology 2021-02-01

A 69-year-old male patient presented with multiple lung nodules revealed by chest-computed tomography (CT) during a preoperative examination for an appendiceal tumor. The nodule diameters ranged from 2-10 mm without either pleural thickening or effusions. fluorine-18-labeled fluorodeoxyglucose (18F-FDG)-positron emission (PET)/CT scan showed high FDG uptake in the tumor, but almost normal standardized values bilateral nodules. CT-guided biopsy led to diagnosis of pulmonary epithelioid...

10.2169/internalmedicine.1063-18 article EN Internal Medicine 2018-08-09

Bleeding in the small bowel rarely occurs, and its treatment is challenging. Surgery sometimes required unstable patients; however, intraoperative identification of bleeding site extremely difficult. Many methods have been reported, but no standard strategy has established yet. Here, we aimed to assess safety feasibility angiography with indocyanine green staining accurately identify sites.This retrospective study analyzed contrast-enhanced computed tomography images patients (n = 8)...

10.1002/ams2.549 article EN cc-by-nc Acute Medicine & Surgery 2020-01-01
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