title: Regional lymphomatoid papulosis in a child--treatment with a UVB phototherapy handpiece.
abstract: Lymphomatoid papulosis (LyP) is a rare skin lymphoproliferative disorder that has been reported only rarely in children. It is included in the World Health Organization classification of cutaneous lymphomas. We report a case of LyP in a 13-year-old Caucasian girl who presented with a 6-month history of recurrent papular lesions on the left upper arm. Histopathologic examination showed a diffuse cellular infiltration of small and medium-sized T lymphocytes CD30+ in the superficial dermis. Treatment was started using a UVB phototherapy handpiece (twice weekly), with resolution of the lesions after 6 weeks of treatment. There was a relapse after 9 months with a good response after six more sessions of treatment. The patient is in good health without lesions after 12 months of follow-up.
authors.affiliation: Dermatology Clinic Dr. Barata Feio, Lisbon, Portugal. joanadiascoelho@hotmail.com
authors.forename: Joana Dias
authors.initials: JD
authors.lastname: Coelho
authors.forename: Ana
authors.initials: A
authors.lastname: Afonso
authors.forename: Ana Barata
authors.initials: AB
authors.lastname: Feio
mesh_terms: D000293:Adolescent; D001132:Arm; D005260:Female; D006801:Humans; D017731:Lymphomatoid Papulosis / Q000532:radiotherapy*; D012878:Skin Neoplasms / Q000532:radiotherapy*; D014467:Ultraviolet Therapy / Q000379:methods*