title: Extranodal spread of anaplastic large cell (CD30+) lymphoma presenting as a cutaneous perivascular infiltrate.
abstract: Cutaneous lesions of anaplastic large cell (CD30+) lymphoma (ALCL) typically present as solitary or multiple ulcerated nodules. This tumor is histologically characterized by a diffuse dermal and sometimes subcutaneous infiltrate composed of bizarre, pleomorphic, neoplastic cells that may be occasionally multinucleated. We report a case of extranodal spread of ALCL to the skin in a 2 1/2-year-old boy presenting as a widespread papular eruption that on biopsy showed lymphoma restricted to the perivascular and periadnexal dermis.
authors.affiliation: Department of Pathology, Indiana University School of Medicine, Indianapolis, USA.
authors.forename: G A
authors.initials: GA
authors.lastname: Derringer
authors.forename: J P
authors.initials: JP
authors.lastname: Cotton
authors.forename: A S
authors.initials: AS
authors.lastname: Melemed
authors.forename: P A
authors.initials: PA
authors.lastname: Treadwell
authors.forename: A F
authors.initials: AF
authors.lastname: Hood
mesh_terms: D001808:Blood Vessels / Q000473:pathology*; D002675:Child, Preschool; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis / Q000473:pathology*; D017728:Lymphoma, Large-Cell, Anaplastic / Q000175:diagnosis / Q000473:pathology*; D008297:Male; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000556:secondary*