title: Plasmoacanthoma.
abstract: Plasmoacanthoma is an extremely rare verrucous tumor located on periorificial regions characterized by dense dermal plasmacytic infiltrates. Some authors classify it as a form of reactive plasma cell proliferation which represents a heterogeneous spectrum of mucocutaneous disorders. These plasma cell proliferations have been considered to be a benign immunologic inflammatory reaction to known or unknown stimuli. However, the etiology of plasmoacanthoma remains highly speculative. We report the case of a 40-year-old woman who presented with a lobulated warty lesion affecting the lower lip. Biopsy from the lesion was compatible with plasmoacanthoma, which remains an underreported disease in the dermatology literature.
authors.affiliation: Clínica privada - São Paulo (SP), Brazil.
authors.forename: Bruna Backsmann
authors.initials: BB
authors.lastname: Braga
authors.affiliation: Universidade de Santo Amaro (UNISA) - Santo Amaro (SP), Brazil.|Hospital do Servidor Público Municipal (HSPM) - São Paulo (SP), Brazil.
authors.forename: Alexandre Ozores
authors.initials: AO
authors.lastname: Michalany
authors.affiliation: Universidade de Santo Amaro (UNISA) - Santo Amaro (SP), Brazil.
authors.forename: Jayme de
authors.initials: J
authors.lastname: Oliveira
authors.affiliation: Universidade de Santo Amaro (UNISA) - Santo Amaro (SP), Brazil.
authors.forename: Luiz Carlos
authors.initials: LC
authors.lastname: Cucé
mesh_terms: D049309:Acanthoma / Q000473:pathology*; D000328:Adult; D001706:Biopsy; D049109:Cell Proliferation; D020405:Dermis / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008046:Lip / Q000473:pathology; D008048:Lip Neoplasms / Q000473:pathology*; D009061:Mouth Mucosa / Q000473:pathology*; D010950:Plasma Cells / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*