• Internal medicine · Feb 2021

    Case Reports

    Localized Gastric Amyloidosis that Displayed Morphological Changes over 10 Years of Observation.

    • Yasushi Takahashi, Waku Hatta, Tomoyuki Koike, Yohei Ogata, Taku Fujiya, Masahiro Saito, Xiaoyi Jin, Kenichiro Nakagawa, Takeshi Kanno, Kiyotaka Asanuma, Kaname Uno, Naoki Asano, Akira Imatani, Fumiyoshi Fujishima, Nagaaki Katoh, Tsuneaki Yoshinaga, and Atsushi Masamune.
    • Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan.
    • Intern. Med. 2021 Feb 15; 60 (4): 539-543.

    AbstractWe herein report an extremely rare case of localized gastric amyloidosis (LGA) with morphological changes during the follow-up. A 71-year-old woman who had a depressed lesion with central elevation in the gastric lower body was diagnosed with LGA. Esophagogastroduodenoscopy at 10 years after the initial examination showed that the lesion had grown and changed morphologically, exhibiting a submucosal tumor-like appearance. Since the lesion was confined to the submucosa, the patient underwent endoscopic submucosal dissection. The final pathological diagnosis was amyloid light-chain (AL)-type LGA. This case may provide useful information regarding the natural history of AL-type LGA.

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