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| 1 | Splenic hamartoma: A case report and review of the literature显示文摘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. | Jongmin Sim Hye In Ahn Hulin Han Young Jin Jun Abdul Rehman Se Min Jang Kiseok Jang Seung Sam Paik | 2013 | World Journal of Clinical Cases2013，1，7： | 4 |
| 2 | Appendiceal Crohn's disease clinically presenting as acute appendicitis显示文摘AIM: To determine the incidence of appendiceal Crohn's disease(CD) and to summarize the characteristic histologic features of appendiceal CD.METHODS: We reviewed the pathology files of 2179 appendectomy specimens from January 2007 to May2013. The computer-assisted retrieval search facility was utilized to collect specimens. We selected those cases that were diagnosed as CD or chronic granulomatous inflammation and defined the final diagnosis according to the histologic findings of CD, including transmural lymphocytic inflammation, non-caseating epithelioid granulomas, thickening of the appendiceal wall secondary to hypertrophy of muscularis mucosa,mucosal ulceration with crypt abscesses, mucosal fissures, and fistula formation. RESULTS: We found 12 cases(7 male and 5 female patients, with an average age of 29.8 years) of appendiceal CD. The incidence of appendiceal CD was 0.55%.The chief complaints were right lower quadrant pain,abdominal pain, lower abdominal pain, and diarrhea.The duration of symptom varied from 2 d to 5 mo.The histologic review revealed appendiceal wall thickening in 11 cases(92%), transmural inflammation in all cases(100%), lymphoid aggregates in all cases(100%), epithelioid granulomas in all cases(100%), mucosal ulceration in 11 cases(92%), crypt abscesses in 5 cases(42%), perforation in 2 cases(17%), muscular hypertrophy in 1 case(8%), neural hyperplasia in 5 cases(42%), and perpendicular serosal fibrosis in 8 cases(67%).CONCLUSION: A typical and protracted clinical course, unusual gross features of the appendix and the characteristic histologic features are a clue in the diagnosis of appendiceal CD. | Hulin Han Hyunsung Kim Abdul Rehman Se Min Jang Seung Sam Paik | 2014 | World Journal of Clinical Cases2014，2，12： | 1 |
| 3 | Cytomegalovirus enteritis with jejunal perforation in a patient with endometrial adenocarcinoma显示文摘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. | Young Jin Jun Jongmin Sim Hye In Ahn Hulin Han Hyunsung Kim Kijong Yi Abdul Rehman Se Min Jang Kiseok Jang Seung Sam Paik | 2013 | World Journal of Clinical Cases2013，1，7： | 0 |
| 4 | Nitrogen source and fate of typical orchard with gentle slope in semi-arid areas显示文摘Excessive nitrogen (N) exports caused by human activities are one of the main reasons for the numerous environmental problems in agricultural production. Orchards, as an essential part of agricultural production, play a crucial role in rural economic development and ecological environment construction. Understanding the migration pathways of N in orchards is significant for the scientific management of orchards and the reduction of environmental pollution. In this research, the source and fate of N in a typical orchard in Beijing were quantitatively analyzed. N management strategies were proposed in combination with agricultural production habits. The total N input into the orchard was 487.19 kg/hm^(2)·a, of which 85.44%, 10.99%, 3.30% and 0.27% of N input were from fertilizer application, atmospheric deposition, biological N fixation and pesticide, respectively. A large amount of N fertilizer application was the primary source of N input in the orchard. For the N fate, the N surplus in the soil could reach up to 68.40% of total N inputs, and only 20.16% were absorbed and utilized by plants. The amount of N losses through ammonia volatilization, runoff and sediment, nitrification and denitrification accounted for 10.68%, 0.39% and 0.37%, respectively. N input in the orchard mainly remained in soil, while N loss was mainly through ammonia volatilization. There were 176.72, 99.00, and 57.52 kg/hm^(2)·a N surplus in 0-40 cm, 40-80 cm, and over 80 cm soil layers, respectively. To deal with the N accumulation on the soil surface and the migration of N from the soil surface to the deep layer of orchards, reducing N fertilizer application, substituting circular furrow for the whole orchard fertilization, adjusting irrigation schedule by reducing the amount of single irrigation, increasing the frequency of irrigation to three times in the normal year, and adopting efficient water-saving irrigation technology are realizable methods. | Miaoying An Ying Xie Yuguo Han Jinxing Zhou Hulin Guo Zhixu Qu | 2023 | International Journal of Agricultural and Biological Engineering2023，16，6： | 0 |
| 5 | Learner Errors:Insights and Implications显示文摘Insights into learner errors vary greatly: Contrastive analysts hold the view that errors are faulty version of the target language and signs of learning failure and thus must be corrected; Corder regards learner errors as evidence of the learner’s active learning and as the most important source of information about the nature of his knowledge; Dulay and Burl’s research shows that learner errors are developmental ;Tarone notices that occurrence of learner errors changes in different situations according to different tasks; Krashen maintains that learner errors can be totally ignored for the simple reason that they will disappear at a certain stage.We suggest that error correction take into consideration the following factors: (l)source, (2)type, (S)acquisition order, (4) task type and context; and that error correction shouldn’t (1)hinder communication, (2)discourage the learner,(3)put the learner on the defensive,(4)cause anxiety. | Han Hulin | 1995 | 池州学院学报1995，15，2： | 0 |
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