BACKGROUND AND OBJECTIVES: Evidence suggests that sustained virologic response to interferon treatment decreases incidence of hepatocellular carcinoma in patients with hepatitis C virus cirrhosis. This study was designed to compare the incidence of hepatocellular carcinoma among cirrhotic patients exposed to interferon based treatment with or without achieving a sustained virological response, in order to evaluate the role of interferon itself in the prevention hepatocellular carcinoma. METHODS: A cohort of 85 patients with compensated hepatitis C cirrhosis was followed after treatment with interferon and ribavirin. Sustained virological response was defined as negative polymerase chain reaction assay 24 weeks after the end of treatment. Patients were followed every 6 months with ultrasound and alpha-fetoprotein. Hepatocellular carcinoma was diagnosed by the finding of a focal liver lesion greater than 2 cm with arterial hypervascularization on two imaging techniques and/or by liver biopsy. RESULTS: The mean follow-up time was 32.1 ± 20 months for patients who achieved a sustained virological response and 28.2 ± 18 months among 47 patients (55%) without SVR. Hepatocellular carcinoma was diagnosed in 1 (3%) vs. 8 (17%) responders and non responders respectively (p = 0.02). CONCLUSION: Patients with cirrhosis due to hepatitis C virus who achieved sustained virological response had significantly lower incidence of hepatocellular carcinoma when compared to those without treatment response. Interferon treatment without achieving sustained virological response does not seem to protect against hepatocellular carcinoma

Adrenocortical insufficiency is a serious complication of AIDS. Usually, integrity of the hypothalamo-pituitary-adrenal (HPA) axis in AIDS patients is assessed by measuring basal cortisol levels and cortisol response to 250 mug of ACTH. Recent studies suggest that a lower ACTH dose increases the sensitivity of the procedure. In the present study, we investigated the prevalence of adrenal hypofunction in AIDS patients using a low-dose ACTH test (1 mug), evaluated the clinical characteristics that might suggest this diagnosis, and the diseases and/or drugs that could be associated with it. We prospectively evaluated 63 very ill AIDS patients and 16 normal controls. A standard examination assessed the presence of signs and symptoms of adrenal insufficiency. Blood samples were collected before and 30 and 40 minutes after an injection of 1 mug 1-24 ACTH. No opportunistic disease, signs, symptoms or drugs were associated with an abnormal cortisol response to ACTH. The lowest stimulated cortisol level in the control group was 18.5 mug/dL; cortisol levels > or = 18 mug/dL were taken to indicate a normal HPA axis. Test results revealed that 12/63 AIDS patients (19%) had an abnormal HPA axis. With these data in mind, we suggest a prospective adrenal function evaluation of all severely ill AIDS patients.

Introdução - Úlceras sangrantes constituem um grave problema de saúde pública e representam cerca da metade de todos os casos de hemorragia gastrointestinal nos Estados Unidos. O objetivo deste estudo foi determinar o valor prognóstico dos achados clínicos, laboratoriais e endoscópicos no ressangramento de pacientes com úlceras gástricas e duodenais sangrantes. Pacientes e Métodos - Foi realizado um estudo de coorte com 94 pacientes para avaliar fatores prognósticos no ressangramento por úlceras pépticas. Resultados - Dos 94 pacientes estudados, 88 não apresentaram novo episódio de sangramento durante os 7 dias de internação. A incidência de ressangramento foi significativamente maior nos pacientes com hemoglobina <6 g/dL na admissão (P = 0.03, RR=6.2). O grupo com ressangramento necessitou mais transfusão de sangue (P = 0,03) e o tempo de internação foi significativamente maior (P = 0,0349) que no grupo com hemostasia. Nas variáveis endoscópicas, a localização da úlcera no duodeno esteve associada positivamente com o ressangramento (P = 0,03). Conclusão - A identificação de paciente de risco de mortalidade por úlcera sangrante permanece um desafio, sendo que apenas alguns fatores são capazes de prever a gravidade da evolução. A identificação destes fatores auxiliou na escolha da melhor conduta terapêutica, melhorando o diagnóstico e diminuindo a taxa de ressangramento e de mortalidade.

Background - Bleeding ulcers are a major problem in public health and represent approximately half of all the cases of upper gastrointestinal hemorrhage in the United States. This study aims to determine the prognostic value of factors such as clinical history, laboratory and endoscopic findings in the occurrence of new episodes of bleeding in patients who have upper gastrointestinal hemorrhage caused by gastric or duodenal peptic ulcer. Methods - A cohort study with 94 patients was designed to investigate prognostic factors to the occurrence of new episodes of bleeding. Results - From the 94 patients studied, 88 did not present a new bleeding episode in the 7 days following hospital admission. The incidence of rebleeding was significantly higher in those patients with hemoglobin <6 g/dL at the admission (P = 0.03, RR = 6.2). The localization of the ulcers in bulb was positively associated to rebleeding (P = 0.003).The rebleeding group needed a greater number of units transfunded (P = 0.03) and the time of hospitalization was longer than the time of the hemostasia group (P = 0.0349). Conclusions - The identification of patients with risk of death by bleeding peptic ulcer remains as a challenge, once few factors are capable of predicting the severity of the evolution. The identification of such factors will allow the choice of the better therapeutic conduct improving the diagnosis and decreasing the rate of rebleeding and the mortality.