[Usefulness of systematic chromoendoscopy with a double dye staining technique for the detection of dysplasia in patients with premalignant gastric lesions].

Introduction: Premalignant gastric lesions have an increased risk to develop gastric cancer.

Objective: To evaluate the usefulness of systematic endoscopy that includes chromoendoscopy with a double dye staining technique for the detection of dysplasia in patients with premalignant gastric lesions.

Patients And Methods: This longitudinal, prospective study was performed in patients with gastric atrophy, intestinal metaplasia or dysplasia who were referred for endoscopy less than 6 months after the initial diagnosis.

[Primary melanoma of the esophagus].

Primary malignant melanoma of the esophagus is a rare, aggressive and poor-prognostic neoplasm, usually detected in late stages. Surgery (esophagectomy) is the treatment of choice when operable and the only factor that improves the disease prognosis is the detection of the lesions in early stages and the recognition of non-typical lesions. Most commonly, Melanoma lesions appear as large masses with proliferative, ulcerated and pigmented aspect.

[Deep vein thrombosis as an extraintestinal manifestation of ulcerative colitis. Presentation of a case].

Extra-intestinal manifestations of Inflammatory Bowel Disease occur in 25% of cases. Vascular manifestations are rare and occur in 1 to 8% of cases. The most relevant are Deep Venous Thrombosis (DVT) and Pulmonary Embolism (PE).

[Eosinophilic gastroenteritis with ascites: clinical case report].

Eosinophilic Gastroentertis (EG) is a very rare disease, characterized by focal or difuse eosinophilic infiltration of the gastrointestinal tract. The clinical presentation is variable and depends on the histological and the extension layer involved. We report a case of eosinophilic gastroenteritis whose main presentation was ascites with peripheral eosinophilia and chronic intermittent diarrhea in a patient with a history of atopy.