title: Type B follicular lymphomatoid papulosis.
abstract: We report a 48-year-old woman who presented with waxing and waning papulovesicles of 4 years' duration. Histologic examination revealed a folliculotropic, small cell dominant, T cell lymphocytic infiltrate unaccompanied by follicular mucin deposition and with scattered intrafollicular and perifollicular CD30+ cells. A diagnosis of type B follicular lymphomatoid papulosis (LyP), rather than mycosis fungoides (MF), was made on the basis of her clinical presentation, which included spontaneously resolving, waxing and waning papules that healed with scarring. Type B follicular LyP is a rare form of LyP.
authors.affiliation: Department of Dermatology, The Mount Sinai School of Medicine, New York, New York 10029, USA.
authors.forename: Paru R
authors.initials: PR
authors.lastname: Chaudhari
authors.forename: Patrick
authors.initials: P
authors.lastname: Emanuel
authors.forename: Jacob
authors.initials: J
authors.lastname: Levitt
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D017730:Ki-1 Antigen / Q000378:metabolism; D017731:Lymphomatoid Papulosis / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013601:T-Lymphocytes / Q000378:metabolism
chemical_list: D017730:Ki-1 Antigen