Cutaneous sarcoidosis during rituximab treatment for microscopic polyangiitis: an uncommon adverse effect?

1 Department of Dermatology, Maebashi Red Cross Hospital, Maebashi, Gunma, Japan 2 Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan 3 Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan 4 Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan Naoko MORIMOTO1 Akira SHIMIZU2 Kazunori OHNISHI1 Yutaka SHIMOMURA3,4