Masanori Koizumi

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The World Health Organization (WHO) classification (2004) defines pancreatic endocrine carcinoma as tumors with gross local invasion or metastasis, and the mere occurrence of angioinvasion or perineural invasion constitute insufficient criteria of malignancy. The significance of this classification remains to be assessed in Japan. Nonfunctioning “malignant”(More)
Autoimmune pancreatitis (AIP) (also called IgG4-related sclerosing pancreatitis (IgG4-SP)) and IgG4-related sclerosing cholangitis (IgG4-SC) are frequently associated with each other. It is generally believed that association of these diseases with pancreatobiliary malignancy is, however, rare. Here, we report on the case of a patient with AIP whose biliary(More)
BACKGROUND The purpose of this study was to retrospectively compare the volume doubling time (VDT) on serial computed tomography (CT) of non-small-cell lung cancer (NSCLC) with epidermal growth factor receptor (EGFR) mutation with that of NSCLC without the mutation. METHODS One hundred and two pathologically proven NSCLCs, including 69 patients with lung(More)
Bronchial artery aneurysms (BAA) are a rarely noted. Asymptomatic cases of BAA are very rare. Most patients are correctly diagnosed only after BAA ruptures. The conventional treatment includes aneurysm resection through thoracotomy or transcatheter arterial embolization. In the present report, we describe a case of an asymptomatic BAA treated using(More)
Public libraries have been associated with a Habermasian public sphere, but articulations between public libraries and the public sphere remain undefined. To make fuller sense of the public sphere as it relates to public libraries, we used qualitative content analysis as a research methodology to study 12 Carnegie Library of Pittsburgh annual reports from(More)
Eye tracking was used to analyze which elements of which screens were viewed by users searching an Online Public Access Catalog (OPAC). Eye tracking data was obtained for 32 participants performing a known-item search task. The results show that more than 30% of participants did not make effective use of screens offering additional details, and that(More)
An 85-year-old woman with no history of abdominal surgery complained of abdominal pain and vomiting and was referred to us with a diagnosis of intestinal obstruction a few days later. Upon admission to our facility, she presented with marked abdominal swelling and prominent kyphosis. Because of the kyphosis, most of the dilated bowel was compressing her(More)
Hepatocellular necrosis may be complicated in the clinical course of T-cell lymphoma. Herein are reported two cases of peripheral T-cell lymphoma associated with a rapid increase of serum transaminases in their final course. The final diagnoses were enteropathy-type T-cell lymphoma of the jejunum (patient 1) and hepatosplenic T-cell lymphoma (patient 2).(More)
BACKGROUND Anaplastic thyroid cancer (ATC) is a rare and extremely aggressive malignancy, with a median survival of less than 6 months due to rapid progression and resistance to multimodal therapies. Effective treatment strategies have not been identified. A prospective clinical study was performed to objectively evaluate outcomes of treatment with(More)