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21.
胃癌癌前病变癌变机制及其逆转的研究进展 总被引:16,自引:7,他引:16
王冠庭 《世界华人消化杂志》2000,8(1):1-4
胃癌癌前病变与胃癌的发生关系,日益受到重视,近几年来特别强调幽门螺杆菌为引起慢性萎缩性胃炎与胃癌的重要危险因子.因此,许多学者进一步深入研究幽门螺杆菌感染对发生胃癌的危险性,胃癌癌前病变发生癌变的机制以及如何使其逆转,是预防和降低胃癌发病的重要课题. 相似文献
22.
ST O'Sullivan MD FRCSI GT McGreal FRCS CM Reardon FRCSI DJ Hehir MCH FRCSI WO Kirwan MCH FRCSI MP Brady MCH FRCSI 《International journal of clinical practice》1997,51(5):289-292
During a four-year period, 308 patients presented following ingestion of foreign bodies. Ingestion was accidental in 272 cases (88.3%) and deliberate in the remainder. Symptoms at presentation included dysphagia, odynophagia, nausea and vomiting, chest pain and pharyngeal discomfort. Sixty-eight patients were asymptomatic. A policy of expectant management and selective endoscopy was employed. Following initial assessment 202 patients (65.6%) were discharged without treatment, 30 (9.7%) of whom were later reviewed as outpatients and did not require admission. Forty-nine patients (16%) were admitted for treatment; 27 had oesophagoscopy, five bronchoscopy and two had foreign body extraction with direct laryngoscopy. In nine patients who were endoscoped, no foreign body was identified. Twenty-seven others were referred to the otorhinolaryngology service in another hospital. There were no deaths in the group and morbidity was 1.2%. We conclude that a policy of selective endoscopy is safe and effective in the management of patients following ingestion of foreign bodies. 相似文献
23.
Persistent diarrhea associated with AIDS 总被引:1,自引:0,他引:1
GT Keusch DM Thea M Kamenga K Kakanda M Mbala C Brown F Davachi 《Acta paediatrica (Oslo, Norway : 1992)》1992,81(S383):45-48
Chronic diarrhea and wasting are very common manifestations of AIDS in adults in developing countries. Etiologic studies show that protozoa (including Cryptosporidium parvum, Isospora belli , and Enterocytozoon bieniusi ) and Mycobacterium avium-intracellulara are the most frequently identified pathogens. Limited data in children suggest that common enteric pathogens are equally as likely in HIV+ and HIV- babies. Preliminary analysis of an ongoing longitudinal study of 469 babies born to mothers with known HIV serostatus in Kinshasa, Zaire, reveals progression of acute to persistent diarrhea is six times greater in HIV+ compared to HIV- babies, and 3.5 times greater in HIV- babies born of HIV+ mothers in comparison to HIV- babies with HIV- mothers. HIV+ babies were also at greater risk than HIV- babies to have recurrent episodes of diarrhea (RR = 2.3). Fifty percent of the deaths were due to acute or persistent diarrhea, and were strongly associated with HIV infection. Efforts to improve child survival in AIDS infected populations will need to address HIV infections in both mothers and infants. 相似文献
24.
Scatter in computed radiography 总被引:1,自引:0,他引:1
25.
Post-traumatic aneurysm of the left ventricle 总被引:6,自引:0,他引:6
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