Publications by authors named "Akihiro Toyokawa"

A 50-year-old male was referred to our hospital for the further evaluation and treatment of abdominal pain. He was diagnosed with complicated appendicitis using computed tomography. After conservative treatment, he underwent an interval appendectomy.

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A 56-year-old woman. She was underwent a lower gastrointestinal endoscopy for bloody stool, and type 2 advanced rectal cancer was found. In CT scan, although distant metastasis is not found, the tumor has been expanded to the dorsal side.

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Introduction: Oxaliplatin-induced peripheral neuropathy (OIPN) is a common adverse events that can limit a patient's quality of life during/after chemotherapy. However, no appropriate methods have been established yet for monitoring the risk of progression of OIPN.

Methods: A simple assessment tool using gem clips, the CLIP test, was established and its performance in predicting the risk of progression to ≥grade 2 peripheral sensory neuropathy (CTCAE ver.

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Background: The concentration of trifluridine in tumor DNA was strongly correlated with that of white blood cells in tumor-bearing nude mice administered trifluridine-tipiracil (TAS-102). Further, a phase I study of TAS-102 in patients with advanced solid tumors showed a significant correlation between decreased neutrophil count and the area under the concentration-time curve of trifluridine. Herein, we aimed to evaluate the association of decreased neutrophil count with the efficacy of TAS-102.

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Introduction: Postoperative pancreas-related complications (PPRC) can cause critical conditions, including sepsis and intra-abdominal bleeding. Thus, it is important to identify patients who are at risk of clinically significant PPRC as early as possible in the postoperative period. Some authors have reported the use of amylase concentration of the drainage fluid (dAmy) to predict PPRC.

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Objectives: This study aimed to investigate the validity of laparoscopic gastric cancer surgery in elderly patients.

Methods: A total of 202 patients who underwent laparoscopic gastrectomy for gastric cancer between January 2007 and December 2016 were divided into an elderly group (age ≥75 years, n = 36) and a control group (age < 75 years, n = 166). The patients' clinicopathological data were reviewed.

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Background: Elderly patients have a high risk of adverse outcomes after surgery. Therefore, it is essential to determine the predictive factors for postoperative morbidity in elderly patients undergoing gastric cancer surgery.

Methods: A total of 544 patients who underwent elective gastrectomy for gastric cancer at Yodogawa Christian Hospital between January 2007 and December 2015 were divided into the elderly group (age ≥70 years, n=282) and a control group (age <70 years, n=262).

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Sphincter-preserving procedures (SPPs) for surgical treatment of low-lying rectal tumors have advanced considerably. However, their oncological safety for locally advanced low rectal cancer compared with abdominoperineal resection (APR) is contentious. We retrospectively analyzed cohort data of 1500 consecutive patients who underwent elective resection for stage II-III rectal cancer between 2010 and 2011.

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Article Synopsis
  • * The severity of acute cholecystitis was classified according to Tokyo Guidelines, with 1 case considered mild and 5 moderate; most gallbladder cancer diagnoses occurred during or after surgery.
  • * Among the patients, two who received additional radical surgery survived without recurrence, while of the three without further procedures, two died shortly after, highlighting the need for careful consideration of early surgery in such cases.
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Background: The Glasgow prognostic score (GPS) has been reported as a sensitive prognostic marker for gastric cancer. This study aimed to investigate whether the GPS is equally applicable to patients with early-stage and advanced-stage gastric cancers.

Methods: Patients (n = 544) who underwent elective gastrectomy for gastric cancer between 2007 and 2015 were retrospectively studied.

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Objectives: This study aimed to investigate the validity of gastric cancer surgery in elderly patients.

Methods: A total of 544 patients who underwent elective gastrectomy for gastric cancer were divided into an elderly group (age ≥75 years, n = 171) and a control group (age <75 years, n = 373). The clinicopathological data of the patients were reviewed.

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Objective: This study's objective was to assess outcomes of a totally conservative strategy for acute cholecystitis (AC) followed by delayed elective cholecystectomy.

Patients And Methods: Consecutive patients who underwent cholecystectomy for AC were divided into the Emergent and Elective cholecystectomy groups. Patients in the elective cholecystectomy group were divided into early, medium, and late groups according to time from symptoms onset.

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Background: The influence of chronic kidney disease (CKD) on the outcome of gastric cancer surgery has rarely been reported.

Methods: Retrospectively collected clinicopathological data on patients who underwent elective gastrectomy between January 2007 and December 2014 were analyzed (n = 500). The patients were divided into 2 groups based on the preoperative estimated glomerular filtration rate (eGFR): a non-CKD group (eGFR ≥60 ml/min/1.

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Article Synopsis
  • The study examined the effectiveness of percutaneous transhepatic gallbladder aspiration (PTGBA) as a conservative treatment for acute cholecystitis (AC) in 275 patients.
  • It categorized patients based on their risk factors and the timing of their PTGBA and subsequent surgery.
  • Ultimately, 95.6% of patients recovered without significant complications, indicating that PTGBA is a viable option for managing AC, even in high-risk individuals.
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Background: It is debatable whether laparoscopic surgery is suitable for obstructive colorectal cancer.

Materials And Methods: We retrospectively reviewed the clinical and oncological effectiveness of laparoscopic surgery after tube decompression for obstructive colorectal cancer in 54 patients (18 laparoscopic resections, 36 open resections).

Results: There were no significant differences between groups with respect to mean size, location, depth, and stage of tumor, median operating times, or median number of lymph nodes retrieved.

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In cases of small bowel perforation with gross contamination, enterostomy has traditionally been the treatment of choice. An 86-year-old woman was diagnosed with perforative peritonitis. Emergency laparotomy revealed a small bowel perforation with gross contamination, and a T-tube enterostomy was performed.

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Purpose: The aim of this phase II clinical trial was to evaluate the preventive effect of dexamethasone mixing injection for venous pain in patients with colorectal cancer during chemotherapy.

Materials And Methods: Patients were randomized to receive a 2-h intravenous infusion of oxaliplatin 130 mg/m(2) on day 1 followed by capecitabine 1000 mg/m(2) (or S-1 40-60 mg/m(2)) twice daily on days 1 through 14 of every 3 weeks with or without dexamethasone 1.65 mg at the infusion on day 1.

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A 69-year-old man with a malignant tumor of the stomach underwent distal gastrectomy with partial resection of the abdominal wall, transverse colon, and lateral segment of the liver. Based on a detailed pathological examination of the resected specimen, a diagnosis of undifferentiated gastric cancer was established. Six months after the operation, during postoperative adjuvant chemotherapy with S-1, diagnostic imaging, including CT and positron emission tomography (PET), revealed a portal vein tumor thrombus and diffusely spreading metastases in the posterior segment of the liver.

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Article Synopsis
  • The study investigates the impact of preserving the superior rectal artery (SRA) during sigmoid colon cancer surgery to prevent blood supply issues and anastomotic leakage.
  • A total of 57 patients underwent SRA-preserving surgery and were compared to 35 patients who did not, with no significant differences found in complications or lymph node outcomes.
  • No cases of anastomotic leakage occurred in the SRA-preserving group, suggesting it’s a safe option, although overall benefits in terms of survival or complications were not significantly demonstrated.
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Objective: Early cholecystectomy is currently the gold standard treatment for acute cholecystitis (AC). However, the acceptability and safety of this strategy remain in dispute. The aim of this study was to clarify the role of percutaneous transhepatic gallbladder aspiration (PTGBA) in the early management of AC in a single center.

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Hepatic epithelioid hemangioendothelioma (HEH) is a rare neoplasm of vascular origin with variable malignant potential. Because most patients with this condition have multiple bilobar lesions, liver transplantation is the standard treatment, and hepatectomy is much less frequently indicated. We describe a case of a 35-year-old woman with unresectable multiple bilobar HEH successfully treated by combination treatment with hepatectomy and carbon-ion radiotherapy.

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Hemobilia is an unusual and potentially catastrophic cause of gastrointestinal bleeding. Although hepatic artery aneurysm is a cause of hemobilia, nontraumatic cases are infrequently reported. Herein, we describe the case of a giant hepatic artery aneurysm requiring hepatectomy because of repeated hemobilia in a patient with Marfan syndrome.

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A 54-year-old man exhibited a pancreatic mass on abdominal ultrasonography. Diagnostic imaging with endoscopic ultrasonography, computed tomography, and magnetic resonance imaging revealed that the mass comprised various internal structures and was not connected to the pancreatic duct. Over a period of 4 years and 2 months, the mass increased from 22mm to 32mm in diameter.

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