title: Case for diagnosis.
abstract: Ketron-Goodman disease was formerly considered a disseminated type of pagetoid reticulosis. However, according to the new classification consensus, it should be regarded as aggressive epidermotropic CD8 T-cutaneous lymphoma, cutaneous gamma/delta T-lymphoma, or tumor-stage mycosis fungoides, depending on the clinical-histological picture. This case highlights a rare and challenging presentation of Ketron-Goodman disease with an indolent presentation and evolution and good response to a low-grade treatment regimen, not fitting well into the new classification criteria.
authors.affiliation: Department of Dermatology and Venereology, Centro Hospitalar São João, Porto, Portugal.
authors.forename: Ana Filipa
authors.initials: AF
authors.lastname: Pedrosa
authors.forename: Olga
authors.initials: O
authors.lastname: Ferreira
authors.forename: Ana Margarida
authors.initials: AM
authors.lastname: Barros
authors.forename: Ana
authors.initials: A
authors.lastname: Nogueira
authors.forename: Herberto
authors.initials: H
authors.lastname: Bettencourt
authors.forename: Filomena
authors.initials: F
authors.lastname: Azevedo
mesh_terms: D001706:Biopsy; D006801:Humans; D016410:Lymphoma, T-Cell, Cutaneous / Q000473:pathology; D008297:Male; D008875:Middle Aged; D056267:Pagetoid Reticulosis / Q000473:pathology* / Q000628:therapy; D012878:Skin Neoplasms / Q000473:pathology* / Q000628:therapy; D013997:Time Factors; D016896:Treatment Outcome