title: Letter: Primary cutaneous marginal zone B cell lymphoma of the face: a challenging diagnosis.
abstract: The primary cutaneous marginal zone B cell lymphoma is a small B cell lymphoma, including cells of the marginal zone, lymphoplasmacytic cells, and plasma cells. Clinically it manifests as erythematous or erythematous-violaceous papules, plaques, or nodules, single or multiple, most often located to the extremities. Its course is usually indolent, with a survival at 5 years of approximately 97 percent. The tumor exhibits a tendency towards local recurrence, but spread to locations outside the skin is extremely rare. We present a case report of a man, 80 years of age, with a primary cutaneous marginal B cell lymphoma of the chin, an atypical location.
authors.forename: Ana
authors.initials: A
authors.lastname: Oliveira
authors.forename: Mónica
authors.initials: M
authors.lastname: Caetano
authors.forename: Rosário
authors.initials: R
authors.lastname: Alves
authors.forename: Margarida
authors.initials: M
authors.lastname: Lima
authors.forename: Manuela
authors.initials: M
authors.lastname: Selores
mesh_terms: D000369:Aged, 80 and over; D018951:Antigens, CD20 / Q000032:analysis; D000970:Antineoplastic Agents / Q000627:therapeutic use; D005153:Facial Neoplasms / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D006801:Humans; D016898:Interferon-alpha / Q000627:therapeutic use; D018442:Lymphoma, B-Cell, Marginal Zone / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D008297:Male; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000032:analysis
chemical_list: D018951:Antigens, CD20; D000970:Antineoplastic Agents; D016898:Interferon-alpha; D019253:Proto-Oncogene Proteins c-bcl-2