• Mayumi Matsuda, Kazuhiro Yokota, Takaya Ichimura, Sakon Sakai, Takashi Maruyama, Takuma Tsuzuki Wada, Yasuto Araki, Funakubo AsanumaYuYDepartment of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Japan., Yuji Akiyama, Atsushi Sasaki, and Toshihide Mimura.
• Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Japan.
• Intern. Med. 2023 Jun 1; 62 (11): 168316891683-1689.

AbstractWe encountered a 57-year-old Japanese woman with encapsulating peritoneal sclerosis (EPS) in systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and systemic sclerosis. The patient was admitted to our hospital because of ascites retention. Administration of tocilizumab, an anti-interleukin-6 receptor antibody, for her RA reduced the refractory ascites remarkably; however, she developed sudden acute gastrointestinal bleeding and died a year later. On autopsy, sclerotic thickening of the peritoneum showed diffuse infiltration of podoplanin-positive fibroblast-like cells, and a diagnosis of EPS was made. EPS rarely occurs in SLE, and tocilizumab may be a new treatment candidate for EPS.

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