Lichen planus with predominant plasma cell infiltrate. 1994

G Roustan, and M Hospital, and C Villegas, and E Sanchez Yus, and A Robledo
Department of Dermatology, Hospital U. San Carlos, Madrid, Spain.

We herein report the case of a patient with lichenoid plaques on the lower extremities and anonychia of all toenails. Histologically, the eruption showed typical features of lichen planus, with the exceptional finding of a lichenoid infiltrate composed mostly of plasma cells. Only two other similar cases have been reported. The explanation for the numerous plasma cells remains unknown although such cases may represent a new histologic variant.

UI MeSH Term Description Entries
D008010 Lichen Planus An inflammatory, pruritic disease of the skin and mucous membranes, which can be either generalized or localized. It is characterized by distinctive purplish, flat-topped papules having a predilection for the trunk and flexor surfaces. The lesions may be discrete or coalesce to form plaques. Histologically, there is a "saw-tooth" pattern of epidermal hyperplasia and vacuolar alteration of the basal layer of the epidermis along with an intense upper dermal inflammatory infiltrate composed predominantly of T-cells. Etiology is unknown. Cutaneous Lichen Planus,Lichen Planopilaris,Lichen Ruber Planus,Mucosal Lichen Planus,Lichen Rubra Planus,Lichen Planus, Cutaneous,Lichen Planus, Mucosal,Planopilaris, Lichen
D009260 Nail Diseases Diseases of the nail plate and tissues surrounding it. The concept is limited to primates. Disease, Nail,Diseases, Nail,Nail Disease
D010950 Plasma Cells Specialized forms of antibody-producing B-LYMPHOCYTES. They synthesize and secrete immunoglobulin. They are found only in lymphoid organs and at sites of immune responses and normally do not circulate in the blood or lymph. (Rosen et al., Dictionary of Immunology, 1989, p169 & Abbas et al., Cellular and Molecular Immunology, 2d ed, p20) Plasmacytes,Cell, Plasma,Cells, Plasma,Plasma Cell,Plasmacyte
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D012867 Skin The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.

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