[Chromoendoscopy in the diagnosis of precancerous lesions of the esophagus. Our experience]. / La cromoendoscopia nella diagnostica delle lesioni precancerose dell'esofago. Nostra esperienza.

The elements of an unfavourable prognosis for oesophageal cancer are frequent metastasis, high incidence of local recurrence and mainly the difficulty of an early diagnosis. Alcohol, tobacco and precancerous lesions are the most important risk factors of these tumours. According to literature, the authors suggest the method of chromoendoscopy, with vital staining by lugol or blue toluidine for endoscopic; guidance to biopsy in the aimed screening of patients, whose habits--alcohol, smoking--should cause, in time, the rising of lesions with neoplastic potentiality. Endoscopy with bioptic test is the best diagnostic investigation. In fact sensibility and specificity of these investigations increase using this method with vital staining.

Massive lower gastrointestinal hemorrhage in patients with portal hypertensive enteropathy: a report of two cases.

Mucosal and vascular changes in the lower gastrointestinal tract occur commonly in patients with portal hypertension. Portal enteropathy, however, is usually asymptomatic, though occasionally clinically significant for chronic gastrointestinal bleeding. Massive hemorrhage has only rarely been described and its management is controversial. Even though more effective non-operative treatments are now available, an emergency porta-systemic shunt procedure remains an important option for selected patients. We report on two cases of massive lower gastrointestinal bleeding from portal hypertensive enteropathy secondary to post-viral cirrhosis.