title: Mycosis fungoides mimicking erysipelas.
abstract: Mycosis fungoides may rarely simulate facial erysipelas. In a patient with that clinical presentation, a biopsy specimen revealed a diffuse dermal infiltrate with numerous neutrophils that also mimicked erysipelas histopathologically. The diagnosis of mycosis fungoides was made on the basis of atypical lymphocytes with focal epidermo- and folliculotropism. It was confirmed by typical findings of mycosis fungoides in a second biopsy from a clinically inconspicuous patch. An identical T-cell receptor gamma-gene rearrangement was detected in lymphocytes of both biopsy specimens.
authors.affiliation: Center for Dermatopathology Freiburg, Freiburg, Germany. ww@zdpf.de
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Weyers
authors.forename: Carlos
authors.initials: C
authors.lastname: Diaz-Cascajo
authors.forename: Peter
authors.initials: P
authors.lastname: Preinfalk
authors.forename: Harald
authors.initials: H
authors.lastname: Löffler
mesh_terms: D001706:Biopsy; D003937:Diagnosis, Differential; D004886:Erysipelas / Q000175:diagnosis*; D005153:Facial Neoplasms / Q000175:diagnosis* / Q000235:genetics / Q000473:pathology; D005260:Female; D015334:Gene Rearrangement, gamma-Chain T-Cell Antigen Receptor / Q000235:genetics; D006801:Humans; D008875:Middle Aged; D009182:Mycosis Fungoides / Q000175:diagnosis* / Q000235:genetics / Q000473:pathology; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000235:genetics / Q000473:pathology; D006377:T-Lymphocytes, Helper-Inducer / Q000473:pathology