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Splenic hamartoma: A case report and review of the literature

World Journal of Clinical Cases 2013年第7期1卷 217-219页

作者： Jongmin Sim Hye In Ahn Hulin Han Young Jin Jun Abdul Rehman Se Min jang kiseok jang Seung Sam Paik Department of Pathology College of Medicine Hanyang University Sungdong-ku Seoul 133-792 South Korea

Splenic hamartoma is a rare benign malformation, composed of an anomalous mixture of normal splenic elements, often found incidentally while working up other complaints or at autopsy. A splenic mass was incidentally found while evaluating the effects of a traffic accident in a 63-year-old woman. Abdominal computed tomography revealed a well-defined splenic mass with rim enhancement. The patient underwent splenectomy. The resected spleen contained a well-defined mass lesion measuring 3.5 cm × 3.0 cm. Microscopic examination revealed disorganized slit-like vascular channels lined by plump endothelial cells without atypia. The cells lining the vascular channels were positive for CD8, CD31, CD34 and vimentin. Endothelial cells that are positive for CD8 are a key feature that differentiates hamartoma from other vascular lesions of the spleen. Although this tumor is very rare, it must be included in the differential diagnosis of splenic mass-forming lesions.

关键词： Hamartoma Malformation Spleen Splenoma

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Cytomegalovirus enteritis with jejunal perforation in a patient with endometrial adenocarcinoma

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World Journal of Clinical Cases 2013年第7期1卷 220-223页

作者： Young Jin Jun Jongmin Sim Hye In Ahn Hulin Han Hyunsung Kim Kijong Yi Abdul Rehman Se Min jang kiseok jang Seung Sam Paik Department of Pathology College of Medicine Hanyang University

Cytomegalovirus(CMV) infection of the gastrointestinal tract has been reported most frequently in the setting of immunodeficiency. The whole gastrointestinal tract can be affected; however, the small bowel is rarely affected. We report a case of CMV enteritis with jejunal perforation in a 53-year-old woman with a history of chemoradiation therapy for endometrial cancer 8 years previously. At follow-up evaluation, lower abdominal pain, diarrhea and vomiting appeared. Abdominal computed tomography showed intra-abdominal free air in the subphrenic space and porta hepatis. The jejunal segment revealed serosal purulent exudates with a perforation. The resected jejunal segment showed a large geographic ulcerative mucosal lesion. The microscopic findings revealed a diffuse ulcerative mucosal change with a prominent granulation tissue formation and many large atypical vascular endothelial cells and stromal fibroblasts with intranuclear or intracytoplasmic inclusion bodies. These cells were positive for CMV antibody. The final diagnosis was CMV-associated jejunitis with a jejunal perforation.

关键词： Cytomegalovirus Enteritis Jejunum Perforation

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Mismatched effects of receptor interacting protein kinase-3 on hepatic steatosis and inflammation in nonalcoholic fatty liver disease

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World Journal of Gastroenterology 2018年第48期24卷 5477-5490页

作者： Waqar Khalid Saeed Dae Won Jun kiseok jang Sang Bong Ahn Ju Hee Oh Yeon Ji Chae Jai Sun Lee Hyeon Tae Kang Department of Gastroenterology Hanyang University College of Medicine Seoul 04763 South Korea Department of Pathology Hanyang University College of Medicine Seoul 04763 South Korea Department of Internal Medicine Eulji University Daejeon 34824 South Korea Department of Translational Medicine Hanyang University College of Medicine Seoul 04763 South Korea

AIM To validate the effects of receptor interacting protein kinase-3(RIP3) deletion in non-alcoholic fatty liver disease(NAFLD) and to clarify the mechanism of *** Wild-type(WT) and RIP3 knockout(KO) mice werefed normal chow and high fat(HF) diets for 12 wk. The body weight was assessed once weekly. After 12 wk, the liver and serum samples were extracted. The liver tissue expression levels of RIP3, microsomal triglyceride transfer protein, protein disulfide isomerase, apolipoprotein-B, X-box binding protein-1, sterol regulatory element-binding protein-1c, fatty acid synthase, cluster of differentiation-36, diglyceride acyltransferase, peroxisome proliferator-activated receptor alpha, tumor necrosis factor-alpha(TNF-α), and interleukin-6 were assessed. Oleic acid treated primary hepatocytes from WT and RIP3 KO mice were stained with Nile red. The expression of inflammatory cytokines, including chemokine(C-X-C motif) ligand(CXCL) 1, CXCL2, and TNF-α, in monocytes was *** RIP3 KO HF diet fed mice showed a significant gain in body weight, and liver weight, liver to body weight ratio, and liver triglycerides were increased in HF diet fed RIP3 KO mice compared to HF diet fed WT mice. RIP3 KO primary hepatocytes also had increased intracellular fat droplets compared to WT primary hepatocytes after oleic acid treatment. RIP3 overexpression decreased hepatic fat content. Quantitative real-time polymerase chain reaction analysis showed that the expression of very-low-density lipoproteins secretion markers(microsomal triglyceride transfer protein, protein disulfide isomerase, and apolipoprotein-B) was significantly suppressed in RIP3 KO mice. The overall NAFLD Activity Score was the same between WT and RIP3 KO mice; however, RIP3 KO mice had increased fatty change and decreased lobular inflammation compared to WT mice. Inflammatory signals(CXCL1/2, TNF-α, and interleukin-6) increased after lipopolysaccharide and pancaspase inhibitor(necroptotic conditi

关键词： Necroptosis Receptor interacting protein kinase-3 Mixed lineage kinase domain-like protein Non-alcoholic fatty liver disease Steatosis

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A Case Report of a Sarcomatoid Carcinoma Arising in the Renal Pelvis with Exuberant Osteosarcomatous Element

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Open Journal of Pathology 2013年第2期3卷 96-98页

作者： Hye In Ahn Jongmin Sim Hulin Han Hyunsung Kim Kijong Yi Young Jin Jun Abdul Rehman Se Min jang kiseok jang Seung Sam Paik Department of Pathology College of Medicine Hanyang University Seoul South Korea.

Sarcomatoid carcinoma is a rare malignant tumor that has both malignant epithelial and mesenchymal components. We describe a sarcomatoid carcinoma arising in the right renal pelvis of a 68-year-old man. The dominant component of the tumor was osteosarcomatous, but there were also focal carcinomatous areas. The sarcomatous tumor cells produced abundant osteoid matrix surrounded by osteoblastic cells. The carcinomatous tumor cells consisted of papillary urothelial carcinoma. Immunohistochemical assay showed that the sarcomatous tumor cells were positive for vimentin and negative for cytokeratin. The papillary urothelial carcinoma was positive for cytokeratin and negative for vimentin. After surgery, the patient underwent adjuvant chemotherapy. Four months later, he presented with recurrence in the right subphrenic area and metastasis in the right middle lobe of the lung.

关键词： Sarcomatoid Carcinoma Osteosarcoma Pelvis Kidney

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