Endoscopic ultrasonography in the diagnosis of gastrointestinal amyloid deposits: clinical case report.

A case of systemic amyloidosis of the digestive tract is described here, with particular attention to the endoscopic ultrasonography aspects, characterized by a wide-spread thickening of the stomach and rectum walls, with loss of the normal layer structure of the mucosa and submucosa. Endoscopic ultrasonography, especially in pseudotumoral forms, may contribute to the differential diagnosis from neoplastic lesions, in which the wall thickening appears to be localized and accompanied by parietal infiltration.