Masahiro Tajika

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BACKGROUND The WHO classified pancreatic neuroendocrine neoplasms in 2010 as G1, G2, and neuroendocrine carcinoma (NEC), according to the Ki67 labeling index (LI). However, the clinical behavior of NEC is still not fully studied. We aimed to clarify the clinicopathological and molecular characteristics of NECs. METHODS We retrospectively evaluated the(More)
AIM To reveal the impact of preoperative endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) of pancreatic ductal adenocarcinoma (PDAC). MATERIALS AND METHODS We retrospectively reviewed 242 patients who underwent surgery for PDAC at our institution between January 1996 and July 2012. Among them, there were three patients with R2 resection and(More)
BACKGROUND AND STUDY AIMS Endoscopic resection is one treatment option for residual or locally recurrent esophageal cancer after definitive chemoradiotherapy or radiotherapy alone. However, little is known about the clinical benefit of salvage endoscopic resection for these lesions. Therefore, the effectiveness and prognostic factors of salvage endoscopic(More)
Evaluation of polyethylene glycol electrolyte lavage solution containing ascorbic acid (PEG-ASC) has been controversial in the point of its hyperosmolarity, especially in old population. So we therefore designed the present study to compare the efficacy, acceptability, tolerability, and safety of 1.5 L PEG+ASC and 2 L standard PEG electrolyte solution(More)
OBJECTIVE No previous studies have described endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) only for intra-ampullary lesions of the papilla of Vater. We aimed to examine whether EUS-FNA can be used to diagnose such lesions. METHODS This study included a subset of 10 consecutive patients in whom EUS-FNA targeted the ampulla of Vater. All the(More)
INTRODUCTION Cetuximab-based chemotherapy showed a statistically significantly higher response rate compared with chemotherapy such as FOLFOX. Therefore, FOLFOX plus cetuximab is suspected to be the best regimen to alleviate tumor-related symptoms with a high response rate. CASE REPORT Here we present the results of 8 consecutive patients with metastatic(More)
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