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Histopathological Diagnosis of Gastrointestinal Amyloidosis Tomio Arai 1 , Yoko Matsuda 1 , Naoko Tsuyama 1 , Hideki Hamayasu 1 , Makoto Nishimura 2 , Satoko Uegaki 3 , Mina Sasaki 3 , Kenichiro Nakajima 3 , Urara Sakurai 4 , Naoko Honma 5 , Junko Aida 5 , Kaiyo Takubo 5 1Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Tokyo 2Department of Endoscopy, Tokyo Metropolitan Geriatric Hospital, Tokyo 3Department of Gastroenterology, Tokyo Metropolitan Geriatric Hospital, Tokyo 4Department of Pathology, Japanese Red Cross Musashino Hospital, Tokyo 5Research Team for Geriatric Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo Keyword: amyloid A , immunoglobulin light-chain , β2-microglobulin , transthyretin , immunohistochemistry pp.287-299
Published Date 2014/3/25
DOI https://doi.org/10.11477/mf.1403114089
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 Since the GI(gastrointestinal)tract is commonly affected by amyloidosis, it is a target organ for histopathological diagnosis. Most systemic amyloidosis occurring in the GI tract contains secondary/reactive amyloid A amyloidosis, primary or myeloma-related amyloid light-chain amyloidosis, and systemic senile amyloidosis. Each type of amyloidosis has specific clinicopathological features and treatments. Thus, biopsy of duodenal, gastric antral and/or jejunal tissues containing submucosal small vessels is required for precise diagnosis. Immunohistochemistry using anti-amyloid A, light chain of immunoglobulin, β2-microglobulin, and transthyretin antibodies is strongly recommended for subclassification of amyloidosis. When making a diagnosis in patients with amyloidosis, pathologists should be aware of background diseases or conditions.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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