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Competing Interests: None disclosed.

Competing Interests: None disclosed.

Mycosis fungoides with penile involvement is extremely rare. Previous reports have shown successful treatment with imiquimod or a combination of beam radiation and chemotherapy. We present a patient with mycosis fungoides and penile involvement. The penile lesions were initially treated with topical imiquimod; however, he developed worsening glandular lesions and discharge. Therefore the treatment was discontinued. Subsequent treatment with brentuximab (anti-CD30) targeted therapy resulted in complete resolution of the penile lesions. To our knowledge, this represents the first case of a complete penile mycosis fungoides response to brentuximab therapy. Brentuximab may be considered for refractory penile mycoses fungoides., Competing Interests: The authors have no conflicts of interest to disclose., (© 2020 Published by Elsevier Inc.)