We report a case of 39-year-old female patient with paraneoplastic pemphigus (PNP) associated with thymoma treated with rituximab plus corticosteroids and methotrexate. After rituximab therapy for 8 weeks, oral ulcerations had cured, lesions on the trunk and limbs improved. Rituximab may be useful for PNP therapy, but further studies are necessary to confirm this hypothesis.
Keywords: Rituximab; paraneoplastic pemphigus.
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