Seong Kweon Hong

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The gastrointestinal tract is frequently in involved light-chain (AL) amyloidosis, but significant hemorrhagic complications are rare. A 71-year-old man presented to our hospital with dyspepsia and heartburn for 1 month. Gastroscopy revealed a large submucosal hematoma at the gastric fundus. Two days later, a follow-up gastroscopy indicated extensive(More)
Carcinosarcoma of gallbladder (CSGB) is a rare malignancy characterized by malignant epithelial and mesenchymal components. Its pathogenesis is unknown and most CSGBs are associated with poor survival because the disease normally presents at an advanced stage, and as a result, curative resection is uncommon. This report describes a case that underwent(More)
PURPOSE Cyclin G2 and cyclin E are important cell-cycle regulators in various cancer tissues. However, little is known about cyclin G2 expression in human gastric cancer tissues, and the role of cyclin E is quite controversial. This study evaluated their clinical significance in gastric cancer tissues. MATERIALS AND METHODS Immunohistochemical staining(More)
Large cell neuroendocrine carcinoma (LCNEC) in the biliary system is a poorly differentiated, high-grade neuroendocrine tumor. These tumors exhibit aggressive behavior and an increased tendency for early nodal and distant metastases. Herein, we report an unusual case of a pure primary LCNEC of the common bile duct (CBD). A 75-year-old female presented with(More)
PURPOSE Combined hepatocellular cholangiocarcinoma (ChC) is a rare type of primary liver cancer, which is thought to have a poorer prognosis than hepatocellular carcinoma (HCC). Cancer stem cells are associated with tumorigenesis, tumor progression, recurrence, metastasis, and poor prognosis in several malignancies including HCC. The aim of this study was(More)
Primary malignant fibrous histiocytoma (MFH) mainly occurs in the extremities, trunk and retroperitoneum. However, MFH of the mesentery is very rare, and locally recurred MFH is even rarer. MFH is severely malignant and invasive regionally. The neoplasm can spread quickly. This report is about a case of a recurred MFH in the mesentery, which locally(More)
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