Yutaka Hirayama

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Ulcerative colitis (UC) often occurs in women of childbearing age. Compared to Western countries, however, few studies have investigated the impact of UC on the progress of pregnancy in Asian populations. We retrospectively examined 91 pregnancies in 64 patients with UC experienced at our hospital and related institutions from 1991 to 2011, focusing on the(More)
PURPOSE Basic fibroblast growth factor (bFGF) is a newly identified recombinant agent that promotes wound healing through an augmented neovascularization. This study examined the effect of bFGF in the treatment of perianal abscesses. PATIENTS AND METHODS Nine consecutive males with an average age of 5.1 months (1-9 months) who presented with perianal(More)
Morgagni hernia is an extremely rare form of congenital diaphragmatic hernia. Only 6 cases of this condition have been reported in the English literature, as diagnosed prenatally. The prognosis of the disease is determined by the severity of the pulmonary hypoplasia and associated anomalies. Here we report a case of Morgagni hernia with massive pericardial(More)
PURPOSE To evaluate the utility of treatment strategies in neuroblastoma (NB), the survival of the NB patients was retrospectively examined. METHODS During the past 40 years from 1967 to 2006, 103 NB patients not detected by the mass screening program were treated. The patients were divided into 3 groups; the period of aggressive surgery (AS group: 43(More)
OBJECTIVE. Inflammatory bowel disease (IBD) is a chronic debilitating disease associated with severe damage to the intestinal mucosa. Glucagon-like peptide-2 (GLP-2) is a potent and specific gastrointestinal growth factor. GLP-2 released from enteroendocrine cells is inactivated by dipeptidyl peptidase-4 (DPP-4). The aim of this study was to examine whether(More)
BACKGROUND AND AIMS The number of patients with Crohn's disease (CD) and the number of cases of intestinal cancer associated with CD have both been increasing in Japan. However, the number of reported cases is lower than for ulcerative colitis-associated cancer. The aim of this study was to identify the clinical picture of CD-associated intestinal cancer in(More)
We herein report an 11-year-old male patient demonstrating advanced cholangiocarcinoma associated with congenital biliary dilatation (CBD). This Japanese boy presented with abdominal pain lasting a few days, and a diagnosis of type IV-A CBD was made based on the findings of imaging studies using ultrasonography, computed tomography, and magnetic resonance(More)
BACKGROUND AND AIM Secondary stomach cancer in lesions of the remnant stomach occurs relatively soon after distal gastrectomy using the Billroth I reconstruction procedure. Prophylactic eradication of Helicobacter pylori after endoscopic resection of early gastric cancer should be used to prevent the development of metachronous gastric carcinoma. However,(More)
Kikuchi-Fujimoto disease (KFD) is a benign and self-limited syndrome, characterized by regional lymphadenopathy and fever. Although the pathogenesis of KFD remains unclear, infectious agents, autoimmune causes, and physicochemical factors have been suggested as triggers. However, KFD following vaccination has never been reported. We present a 14-year-old(More)
Hepatic portal venous gas is a rare condition that occurs when intraluminal gas or gas produced by intestinal bacteria enters the portal venous circulation. It has recently been recognized as a rare complication of colon procedures by endoscopy or barium enema. Given the frequency of these procedures in patients with inflammatory bowel disease, hepatic(More)