著者

Reiko Muto Koji Inagaki Naokazu Sato Tetsuro Sameshima Yuka Nagakura Satoshi Baba Noritoshi Kato Shoichi Maruyama Toshiyuki Akahori

出版者

The Japanese Society of Internal Medicine

雑誌

Internal Medicine (ISSN:09182918)

巻号頁・発行日

pp.4731-20, (Released:2020-08-12)

参考文献数

32

被引用文献数

2

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The relationship between anti-neutrophil cytoplasmic antibody (ANCA) titer levels and relapse risk in patients with ANCA-associated vasculitis (AAV) following clinical remission remains controversial. We herein report a case showing ectopic relapse of AAV in the pituitary with no ANCA elevation after renal remission. Magnetic resonance imaging revealed an enlarged pituitary gland. A pituitary biopsy showed geographic necrosis with multinucleated giant cells. We diagnosed this case as relapse of AAV in the pituitary. One month after rituximab therapy, the pituitary gland volume had decreased. The intensification of therapy due to the possibility of vasculitis relapse may facilitate better control of AAV.