Publications by authors named "Shigeto Maeda"

Article Synopsis
  • A multicenter phase III trial is being conducted to evaluate a dexamethasone-based mouthwash for preventing chemotherapy-induced stomatitis in early breast cancer patients.
  • The study will involve 230 patients, randomly assigned to either the dexamethasone mouthwash group or a control group using tap water as mouthwash.
  • The main goal is to measure the effectiveness of the mouthwash in reducing the incidence of stomatitis, tracked through electronic patient-reported outcomes.
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After radical surgery for breast cancer, screening to diagnose recurrence in asymptomatic patients is not recommended. We retrospectively evaluated quality-adjusted survival. Included were fifty-seven recurrent breast cancer patients who died.

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Purpose: No standard approach other than oral care is available for preventing chemotherapy-induced stomatitis in patients with breast cancer. In this randomized, controlled phase 2 trial, we aimed to assess the efficacy and safety of a dexamethasone-based mouthwash in preventing chemotherapy-induced stomatitis in patients with early breast cancer.

Basic Procedures: Patients with breast cancer scheduled for epirubicin and cyclophosphamide (EC) or docetaxel and cyclophosphamide (TC) therapy were selected and allocated in a 1:1 ratio to the intervention and control groups.

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Article Synopsis
  • The study investigates the effectiveness of olanzapine in managing nausea and vomiting in breast cancer patients receiving trastuzumab deruxtecan (T-DXd), which are common side effects of the treatment.
  • It is a multicenter, placebo-controlled, double-blind phase II trial involving at least 156 patients, measuring their symptoms over 22 days to determine the complete response rate for nausea and vomiting.
  • Approved by relevant ethics boards, the findings will be shared at conferences and published in scientific journals to contribute to broader cancer treatment knowledge.
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Systemic therapy for stage IV breast cancer is usually an initial treatment and is based on findings regarding biomarkers (e.g., hormone receptors and human epidermal growth factor receptor-2 [HER2]).

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In Japan, asymptomatic metastatic breast cancer (MBC) is often detected using tumor markers or imaging tests. We aimed to investigate differences in clinicopathological features, prognosis, and treatment between asymptomatic and symptomatic MBCs. Patients with MBC were retrospectively divided into asymptomatic and symptomatic groups to compare their prognosis by breast cancer subtype: luminal, human epidermal growth factor receptor 2 positive, and triple negative.

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Magnetic resonance cholangiopancreatography (MRCP) is a non-invasive imaging technique that provides high-quality visualization of the biliary tree, including the gallbladder. This study aimed to evaluate the useful-ness of preoperative MRCP for acute cholecystitis in predicting technical difficulties during laparoscopic chole-cystectomy (LC). A total of 168 patients who underwent LC with preoperative MRCP were enrolled in this study.

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Acute mesenteric ischemia (AMI) is often caused by superior mesenteric artery (SMA) embolization. We report a rare case of synchronous celiac axis and SMA embolization in an elderly woman with initially mild abdominal pain. Ultimately, a second contrast-enhanced computed tomography revealed extensive necrosis from the stomach to the transverse colon together with liver ischemia due to hours of occlusion.

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Background/aim: Stage III breast cancer comprises a broad spectrum of disease, including the extent of supraclavicular/internal mammary lymph node metastasis. In this study, we evaluated the usefulness of the absolute lymphocyte count (ALC) and neutrophil-to-lymphocyte ratio (NLR) in predicting the prognosis of patients with stage III breast cancer.

Patients And Methods: Seventy-five patients with stage III breast cancer who underwent surgery were included.

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Background: Anthracycline (A) or taxane T-based regimens are the standard early-line chemotherapy for metastatic breast cancer (BC). A previous study has shown a survival benefit of eribulin in heavily pretreated advanced/recurrent BC patients. The present study aimed to compare the benefit of eribulin with treatment of physician's choice (TPC) as first- or second-line chemotherapy for recurrent HER2-negative BC.

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Unlabelled: Survival of patients with breast cancer can be prolonged by treatment with drugs, particularly new molecular-targeted drugs. However, these agents can be expensive and such treatments can be "an economic burden." In this ongoing trial, we aim to assess the usefulness of ChemoCalc, a software package for calculating drug costs, to help patients understand the financial outlays.

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Article Synopsis
  • A study was conducted to explore the possibility of avoiding surgery in patients diagnosed with ductal carcinoma in situ (DCIS) and to identify factors that could predict if they would be upstaged to invasive ductal carcinoma (IDC) after surgery.
  • Researchers analyzed data from 2,293 patients to find key predictors of IDC, highlighting the significance of palpable masses, certain mammography and ultrasound findings, and MRI tumor size.
  • The study concluded that using a combination of these predictive factors can lower the likelihood of postoperative upstaging even when tumor size is larger than 20 mm.
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Knowledge of anatomical variations of the celiac axis is important in upper abdominal surgery. Aberrant common hepatic artery originating from the left gastric artery without connecting the gastroduodenal artery is extremely rare. Preoperative vascular anatomy assessment using reconstructions of CT images may be useful for safe surgical procedure.

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Background: Pharyngoesophageal dysphagia sometimes develops after esophagectomy. However, severe dysphagia after esophagectomy due to cricopharyngeus muscle dysfunction is a rare complication. There are no recommended clinical treatments for cricopharyngeus muscle dysfunction after esophagectomy.

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Background: Pancreatic neuroendocrine tumors (PNETs) are typically solid neoplasms but, in very rare cases, present as cystic lesions. We describe a case of a cystic neuroendocrine tumor that developed as a small cystic lesion.

Case Presentation: In 2011, a 66-year-old Japanese woman underwent computed tomography (CT) that revealed a cystic lesion in the tail of the pancreas measuring 9 mm.

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Background/aim: To predict pCR during neoadjuvant chemotherapy is still difficult. The aim of this study was to evaluate the optimal tumor reduction rate and modalities for predicting pCR after two cycles of docetaxel.

Patients And Methods: We analyzed 52 patients with HER2-positive or triple-negative breast cancer.

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Background: The tumor-node-metastasis (TNM) classification system to categorized anaplastic thyroid cancer (ATC) was revised.

Methods: The revised system was evaluated using a large database of ATC patients.

Results: A total of 757 patients were analyzed.

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Introduction: Stomatitis is a frequent adverse event in patients undergoing chemotherapy for breast cancer. Stomatitis can hamper oral nutrition resulting in malnutrition, reduce quality of life and introduce the need for dose reductions and interruption of chemotherapy; however, there is currently no standard approach for preventing chemotherapy-induced stomatitis. We aimed to assess the safety and efficacy of a dexamethasone-based elixir mouthwash for preventing chemotherapy-induced stomatitis in patients with early breast cancer.

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Hormone receptor and human epidermal growth factor receptor 2 (HER2) protein tests in metastatic breast cancer tissue are recommended in the guidelines of the American Society of Clinical Oncology/American Pathology Association. As part of a multi-institutional study by the National Hospital Organization, we conducted an investigation to examine these molecular markers, using cytological specimens as a substitute for tissue specimens from breast cancer metastasis. To confirm the usefulness of receptors tested in metastatic lesions, the treatment course of registered metastatic breast cancer patients was analyzed.

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Purpose: Laparoscopic splenectomy (LS) has become the standard operative approach for splenectomy. Portal or splenic vein thrombosis (PSVT) is a serious and common complication after LS, and lethal complications of PSVT can occur when the portal vein is completely occluded by portal vein thrombosis (PVT). We aimed to clarify the predictors of PSVT after LS and to determine which of them were also predictors of PVT.

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Introduction: Nonadherence to adjuvant endocrine therapy has been poorly studied in Asian patients with breast cancer. We therefore assessed adherence to endocrine therapy among women with breast cancer in Japan.

Patients And Methods: We conducted a prospective observational study among Japanese women with hormone receptor-positive breast cancer.

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Background: Primary retroperitoneal mucinous cystadenocarcinoma (PRMC) is extremely rare, and its biological behavior, pathogenesis, optimum treatments, and prognosis remain to be elucidated. We herein report a case of PRMC with an 80-month follow-up.

Case Presentation: A 29-year-old woman was diagnosed with unknown retroperitoneal tumor with benign right ovarian cyst and uterine fibroids, and she underwent laparotomy.

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A 46-year-old woman with a history of Graves' disease presented with the chief complaints of appetite loss, weight loss, fatigue, nausea, and sweating. She was diagnosed with diabetic ketoacidosis (DKA), thyroid storm, and influenza A. She was treated with an intravenous insulin drip, intravenous fluid therapy, intravenous hydrocortisone, oral potassium iodine, and oral methimazole.

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