Abstract
Amyloidosis is a systemic metabolic disease characterized by abnormal protein deposits in a whole body, and is often diagnosed for the first time by necropsy. This paper describes a case of pyloric stenosis due to amyloidosis, in which we could definitely diagnose by biopsy preoperatively.
A 68-year-old woman complained of abdominal distention and loss of appetite. Biopsy of the pyrolic submucosal layer revealed amyloidosis and subtotal gastrectomy was performed. Circular thickness of the antral wall wa found where the submucosa and proper muscle were pathologically composed of amyloid.
Because of the progress in endoscopical biopsy, the frequency of accurate diagnosis of pyloric stenosis due to amyloidosis has been increasing. Therefore, it is mandatory to keep this condition in mind to differentiate the benign pyloric stenosis.
