[Endoscopic resection of esophageal leiomyoma with elastic band ligation].

Unlabelled: Leiomyoma is the most frequent esophageal benign tumor. It represents 70% of these tumors and 1 to 8% of all esophageal tumors. The majority of cases are asymptomatic and are discovered by chance in endoscopic examinations, and a conservative management is adopted.

[Precut Vater's papilla. Prospective evaluation of frequency of use, effectiveness, complication and mortality. Cooperative study in the northwest of the province of Buenos Aires].

Introduction: Precut papillotomy, has been considered a potentially dangerous procedure. In spite of this, numerous national and foreign referral centers have reported good results with the use of this technique that increases the cannulation rate and permits additional therapeutic procedures.

Objectives: We evaluated the procedure in terms of frequency of use, effectiveness, complications and mortality.

[Intrahepatic cholestasis induced by amoxicillin alone].

We present a young, female patient with clinical and biochemical manifestations of acute cholestasis who had undergone a 10-day course of 1,500 mg/day amoxicillin 3 weeks before the consultation. Diagnosis was based on the absence of alcohol consumption, negative viral markers and antibodies, normal biliary tract, clinical and biochemical improvement when amoxicillin was withdrawn and liver biopsy with histological changes compatible with amoxicillin-induced acute cholestasis. Because hepatotoxicity induced by amoxicillin alone is rare, we believe it important to communicate this new case and to warn of this possible complication.

[Endoesophageal prosthesis as palliative treatment for malignant esophageal stenosis: cooperative study of the Northwest of the Buenos Aires Province].

Purpose: To show the experience in rigid prosthesis used as a palliative treatment for malignant++ esophageal stenosis.

Material And Method: From November 1995 to January 1997, 14 patients between 51 and 83 years old, were referred for rigid prosthesis in a prospective way (71.5 = 2.

[Knots in nasojejunal feeding tube: a complication not described].

We report a problem not yet described with nasojejunal tube. It got knotted frequency, types and causes are reported as well frequency, types and causes are reported as well as suggestions to prevent it.

[Toxic megacolon due to Shigella: a report of a new case].

A new case of Shigella-caused megacolon is described in detailed form. Some considerations are made about frequency, pathology, clinic and prognostic features.

[Prevalence of hepatitis B virus markers in dentists in a rural community].

It carried out an epidemiology serum study in dentist of Lincoln with the object to know the prevalence of hepatitis B viral index and the influence of the professional and extra-professional. From the 12 integrants of the study, 3(25%) had any positive index. There are significant differences with a group of voluntary blood donars, its considered a danger group.

Influence of ambroxol on lung tissue penetration of amoxicillin.

Lung amoxicillin levels were assessed in tissue obtained from 16 patients who underwent lung resection due to different pulmonary diseases. In this double-blind placebo controlled study patients were allocated to two groups in randomized order; one group received amoxicillin 1000 mg t.i.

[Value of the D-xylose test in elderly subjects].

To ten patients who have more than sixty years old (medium: 75.5), the test of D-Xylose with 25 g was carried out. They have not intestinal or extraintestinal disease, that difficult the results.

The interaction of bromine with micron and submicron aerosols.

This study was undertaken to gain a better understanding of the reactions of aerosols with gases and vapors. The experimental system was designed in which both phases were dispersed. A collision-type nebulizer was used to generate monodisperse aerosols of 0.