142 patients underwent diagnostic ultrasonography. Out of these, 100 patients have liver tumor and 42 have liver abscess. The prevalence is higher in male than in female and higher in 20-60 years of old than in other age groups. Liver tumor and abscess are more likely to be seen in right lobe than in left lobe with size of 5-10cm (55.7%). For liver abscess, sound reduction is more common (25.03%), while for liver tumor, sound combination and mixes are common types.
ultrasonography ; Liver Abscess ; diagnosis ; Liver Neoplasms

1668 patients (male: 1,099, female: 569) experienced the epigastric pain, dyspepsia,nausea, weight loss, digestive bleeding received the endoscopic diagnosis for inflamatory and ulceration, histological diagnosis and detection of H.pylori. The results have shown that the rate of possitive H.pylory infection in men was higher than this in women (60.28% compared with 51.80%). The test’s sensitivity and specificity were 93-98% and 98%, respectively.
Helicobacter pylori ; Endoscopy, Digestive System

An analysis of 58/218 patients with the possitive HBsAg(+) consulted in the Ngoc Khanh medical and health advice center was implemented. The objective of the study was to find the clinical and paraclinical features, discuss some aspects of the early detection according to the a typical symptoms, the high rate of both HBsAg (+) and antiHBs(+) as well as the transmission resources and treatment in the future.
Hepatitis B ; Hepatitis, Viral, Human

In December 2002, 445 households and 1832 individuals of Khanh Trung commune were interviewed and examined in a cross-sectional survey (approximately 85% inhabitants of the commune). The results showed that: The slide positive rate was 10.1%. The rate of asymptomatic malaria carriers was 77.2% of total malaria confirmed cases. There is a relation between people with sleeping in the forest and people without sleeping in its, OR=1.89, P=0.001. Ethnic group of Ra-glai infected with malaria (11.1%) and the age group which had highest rate of asymptomatic malaria was 5-9 years old 11.2%. Parasite density index of asymptomatic malaria group was lower than that of the fever malaria group
Malaria ; epidemiology ; disease ; diagnosis

The incidence of asymptomatic malaria, non fever parasite carriers was 86.6% of total parasite carries. This incidence increased with the age and fluctuated between 84.6% and 95.5%. Among asymtomatic malaria patients, gametocyte carriers accounted for 68.5% of total gametocyte carrier number and increased with age in the 2-9 old age group, and in this group the rate of splenomegaly is higher than that of other age groups. Malarial antibody mean value in malarial asymtomatic patients proportional directly with the age and inversely proportional with parasite density. There was an association between risk factors and the asymptomatic malarial rate (OR = 2.4 and 3.0) with p<0.001.
epidemiology ; malaria ; diagnosis

Introduction: Vietnam medical universities have one-step at a time developed a community-based education system to assist medical students in improving their knowledge and practical skills in providing public health services through internships. It is, therefore, necessary to evaluate the role of commune and district health staff, as well as authorities to learning and teaching activities.\r\n', u"Objectives: This study aims to assess the acceptance of health staff and authorities regarding the teaching/learning process of medical students in Dong Hy District, Thai Nguyen Province and Kim Bang District, Ha Nam Province. Subjects and Methods: Surveyed participants, whom were selected by 'purpose sampling' technique, includes health staff at district and commune levels, and representatives of local authorities.\r\n", u'Results: The local authorities at district and commune levels played a significant role in the students\u2019 internship in the community: arranging accommodations, appointing health staffs to help students, introducing practices. Almost all of local health staffs were satisfied with the students.\r\n', u"Conclusion: These findings indicate that the students' internship in the community together with their social activities was highly accepted by the local people. Their supports ensure good achievements.\r\n", u'
Acceptance of community ; Field training of medical student

Background: Training community-oriented general practitioners with the aims to provide the medical knowledge and skills of working in the community for medical students is appropriate with the socioeconomic context in Vietnam. Objectives: To evaluate the acceptance of the community in two districts Kim Bang (Ha Nam province) and Dong Hy (Thai Nguyen province) on field training for medical students. Subjects and method: The cross - sectional study was carried out on 300 households that were chosen randomly from 2 rural districts on April 2006. The heads of households were interviewed by open - ended questionnaires. Another 120 key informants from these two districts were invited to participate in a focus group discussion. Results: 81% of households voluntarily participated in the organization of field training for the medical students. More than 97% households paid attention to the medical students\u2019 information about health care and environmental hygiene. With medical community-based education, the people from communities receives\u2019 improvement in their knowledge of child care and personal hygiene in order to prevent diseases. Conclusion: Being exposed to health problems in communities, medical students can enhance their working and communication skills. People in the communities had a chance to improve their knowledge of disease preventions.
medical field training

Background: According to statistical data of the Vietnam Ministry of Health, there were 124,223 people with positive HIV, 23,661 AIDS patients and 13,649 AIDS- related deaths up to April 30th 2007. The major transmission route is injection. Objectives: (1) To compare the characteristics of drug use in users with different time. (2) To describe the health issues and health service access of young male drug users. Subjects and method: A cross-sectional survey was carried out using a combination of medical anthropology and epidemiology methods. 1.115 young male drug users in Ha Noi between September 2004 and September 2005 were divided into 4 groups of the equivalence number, but with different drug using history. Results and conclusion: The newer drug users (within 2 years) started using drug later than the older ones, more of them started using by injecting; they transfer from smoking/sniffing to injecting as well as trying and using more different types of drugs together in shorter time than others. The proportion of HIV (+) infection in these people was higher, which states the necessity of intervention to help them enhance their knowledge to prevent HIV infection amongst themselves. Mental health care is also needed for drug users, the demand for mental health care increases with the time of drug usage.
young male heroin users

Introduction: Hepatitis C is a dangerous disease and if left untreated can have serious consequences to the patients. While hepatitis C is difficult to treat, its vaccine is still unavailable. Previous studies have showed that there is a low rate of drug users having HCV tests. This means HCV infections does not have any great importance attached to it amongst the drug user group.\r\n', u'Objectives: To discover the status of HCV infection among drug users in Hanoi and to analyse the associated factors. \r\n', u'Subjects and methods: This crossover descriptive study was conducted in Hanoi. Research objects consisted of only men within the 16 - 25 years old age group, who used heroin from 09/2005 to 12/2006. These participants were interviewed and tested for HIV, HCV and HBV.\r\n', u'Results: HCV prevalence is 35.1 %. Especially, the research has indicated that 100% of HIV infected cases have also contracted HCV. This co - infectious status can be a challenge to subjects when they experience ARV treatment. The mean age of surveyed participants is 19. 83.6% of them have attended secondary school. 30.1 % have taken part in illegal earning activities. \r\n', u'Conclusion: HCV infection was discovered in the early drug injection stage. The proportion of HIV infection among injecting drug users is 28.24 times compared to the smoking drug users.\r\n', u'
HeV ; HIV ; Injecting drug user

Background: In Vietnam, the HIV/AIDS pandemic is quickly spreading, almost totally in young people and among injecting drug users.The transition phase from smoking to injecting is very important for the life of injecting drug users because it is a risk factor of disease transmission. Objectives: (1) To analyze the transition phase from smoking/sniffing to injecting of the young male heroin users in Ha Noi. (2) To describe some factors related to the transition phase in these people. Subjects and method: A cross-sectional study carried out from September 2004 to September 2005 at 9 districts in Ha Noi city. The subjects were 1115 young men aged 16 to 29 years, who has been living in Ha Noi for over 6 months and smoked/sniffed heroin within the last 30 days. Results and conclusions: The average time of drug user in the 1115 subjects was 4.7 years. The majority started using drug at the age of 18.4 +/- 3.1 years. In which, 71 % consume the drugs by injection. The average time from smoking to injecting is 2.49 +/- 2.2 years. The main reasons for injecting drugs were for being faster \u2018on the height\u2019 (42%) and cheaper (40%). Some factors related to the transition phase included: age of the first heroin use, year of the first heroin use, situation for migrating into Ha Noi, knowledge level, the kind of drug used for the first time. Young people began using heroin in the year 2000 had a quicker transition phase than those using heroin before 1997 (p< 0.01).
injecting drug user ; drug user ; heroin