Vol.20 No.6

Case Report

Organizing pneumonia in a patient with rheumatoid arthritis treated with etanercept

Authors

Hiroyuki Sakaida1 , Yuko Komase2 , Tamiko Takemura3

  • Odoriba Sakaida Clinic, 8-2-1 Gumisawa-cho, Totsuka-ku, Yokohama 245-0061, Japan
  • Department of Respiratory Internal Medicine, Yokohama-City Seibu Hospital, St. Marianna University School of Medicine, 1197-1 Yasashi-cho, Asahi-ku, Yokohama 241-0081, Japan
  • Department of Pathology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo 150-8935, Japan
Received:

15 February 2010

Accepted:

31 May 2010

Published online:

24 June 2010

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Abstract

Etanercept-induced organizing pneumonia (OP) has not been reported in Japan. We describe the case of a rheumatoid arthritis patient who developed OP during etanercept treatment and discuss the possible mechanisms underlying the development of etanercept-induced OP and the existence of factors that predispose Japanese patients to drug-induced OP.

Key words

Etanercept - Organizing pneumonia - Rheumatoid arthritis