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KMID : 0614619950270060728
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Korean Journal of Gastroenterology
1995 Volume.27 No. 6 p.728 ~ p.733
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A Case of Primary Amyloidosis Suspected of Secondary Type
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홍성표
김규래
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Abstract
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Amyloidosis is a heterogenous group of disorders characterized by extracellular deposition of a proteinaceous insoluble fibrillar material (amyloid) in various tissues and organs. Primary amyloidosis (AL) is characterized by fibrils composed of
the
variable portion of a monoclonal light chain. When amyloid is stained with Congo red, it produces and apple-green birefringence under polarized light. A modified potassium permanganate stain allow reasonably accurate differentiation of the
amyloid
A
type from AL amyloid. We report a case of primary amyloidosis diagnosed by endoscopic gastric mucosal biopsy in a patient who had history of tuberculosis at pleura and knee about 20 years ago. He was suspected of secondary amyloidosis but
confirmed
as
primary amyloidosis after modified potasium permanganate stain. (Korean J Gastroenterol 1995; 27:728-733)
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