Tanaka Yu, Takikawa Tetsuya, Kume Kiyoshi, Kikuta Kazuhiro, Hamada Shin, Miura Shin, Yoshida Naoki, Hongo Seiji, Matsumoto Ryotaro, Sano Takanori, Ikeda Mio, Unno Michiaki, Masamune Atsushi
Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan.
Department of Surgery, Tohoku University Graduate School of Medicine, Japan.
Intern Med. 2021 Jul 1;60(13):2067-2074. doi: 10.2169/internalmedicine.6589-20. Epub 2021 Feb 1.
A 71-year-old man underwent surgery for a pancreatic neuroendocrine tumor. Follow-up imaging showed swelling of the remnant pancreas, and he was histologically diagnosed with autoimmune pancreatitis based on endoscopic ultrasonography-guided fine-needle aspiration specimens. After two years, a tumor appeared on the liver surface. Although we planned to perform laparoscopic partial hepatectomy, the intraoperative findings showed that the tumor was located in the diaphragm. Partial resection of the diaphragm was performed, and the final diagnosis was an immunoglobulin G4-related inflammatory pseudotumor in the diaphragm. To our knowledge, this is the first reported case of an immunoglobulin G4-related diaphragmatic inflammatory pseudotumor.
一名71岁男性因胰腺神经内分泌肿瘤接受手术。随访影像学检查显示残余胰腺肿胀，基于内镜超声引导下细针穿刺标本，他被组织学诊断为自身免疫性胰腺炎。两年后，肝脏表面出现一个肿瘤。尽管我们计划进行腹腔镜肝部分切除术，但术中发现肿瘤位于膈肌。遂进行了膈肌部分切除术，最终诊断为膈肌IgG4相关炎性假瘤。据我们所知，这是首例报道的IgG4相关膈肌炎性假瘤病例。
