Kwi-Won Park

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Solid and papillary epithelial neoplasm of the pancreas is an uncommon low-grade malignant tumor found predominantly in young females. In this paper, the authors report the tumor's clinical characteristics and the results of surgery in six children. Six cases of solid and papillary epithelial neoplasm of the pancreas pathologically verified at Seoul(More)
OBJECTIVES To delineate the clinical and pathological characteristics of solid pseudopapillary neoplasm (SPN), compare them between adults and children, and determine the predictive features suggesting malignant potential. DESIGN Retrospective analysis of patients who underwent surgery for a pathologically confirmed SPN. SETTING Tertiary care referral(More)
BACKGROUND/PURPOSE The aim of the study was to review the gastrointestinal abnormalities occurring in association with situs anomalies. METHODS Patients with situs anomalies were identified from the medical records of pediatric patients of Seoul National University Children's Hospital from January 1980 to July 2004. Retrospective study was undertaken.(More)
BACKGROUND/PURPOSE Undifferentiated (embryonal) sarcoma of the liver (USL) is a rare malignancy found in older children, and the most appropriate treatment strategy has been controversial. The authors report the tumor's clinical characteristics and the results of management in 6 children and recommend the best treatment plans based on these findings. (More)
PURPOSE To prospectively evaluate the accuracy of hepatic artery diameter and hepatic artery diameter-to-portal vein diameter ratio for ultrasonographic (US) diagnosis of biliary atresia, with cholangiographic or clinical information as reference standard. MATERIALS AND METHODS Institutional review board approval and informed consent were obtained. US was(More)
Infantile hepatic hemangioendothelioma (IHHE) is a rare disorder with only a few series reported in the medical literature. We reviewed our treatment experience with IHHE over 17 years. A retrospective analysis of patients with IHHE between 1991 and 2008 was performed. Sixteen patients (median age 30 days) with IHHE were identified. A palpable abdominal(More)
PURPOSE Although the incidence of choledochal cyst (CC) diagnosed in the prenatal or neonatal period is increasing, excision of CC in early infancy is not universally recommended. To validate the rationale of excision of CC in the neonatal period, operative complications and the histologic grade of liver fibrosis at the time of excision of CC were compared(More)
PURPOSE Laparoscopic choledochal cyst excision with Roux-en-Y hepaticojejunostomy (LCE) in children is being attempted more frequently around the world, and although it has been performed in Korea, no publication has been published on it. However, cholangitis and/or pancreatitis are limitations that make open conversion more likely. The aims of this study,(More)
Hepatoblastoma is a rare pediatric malignancy that frequently appears in an advanced unresectable stage. Improved resectability and survival rate have been reported with the help of neoadjuvant chemotherapy. Between January 1987 and June 1995 a series of 20 patients were managed with a diagnosis of hepatoblastoma. The median age at diagnosis was 13 months(More)
Hirschsprung disease (HSCR) is a congenital and heterogeneous disorder characterized by the absence of intramural nervous plexuses along variable lengths of the hindgut. Although RET is a well-established risk factor, a recent genome-wide association study (GWAS) of HSCR has identified NRG1 as an additional susceptibility locus. To discover additional risk(More)