[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negative viral markers and antibodies, normal biliary tract, clinical and biochemical improvement when amoxicillin was withdrawn and liver biopsy with histological changes compatible with amoxicillin-induced acute cholestasis.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.