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Plasma cell gingivitis
Plasma cell gingivitis〔Glauser RO, Humpreys PK, Stanley HR, Baer PN: An unusual gingivitis among adolescent navajo Indians. periodontics 1963;1:255-259.〕 is a rare condition,〔 appearing as generalized erythema (redness) and edema (swelling) of the attached gingiva, occasionally accompanied by cheilitis (lip swelling) or glossitis (tongue swelling). It is called plasma cell gingivitis where the gingiva (gums) are involved, plasma cell cheilitis,〔 where the lips are involved, and other terms such as plasma cell orifacial mucositis,〔 or plasma cell gingivostomatitis where several sites in the mouth are involved. On the lips, the condition appears as sharply outlined, infiltrated, dark red plaque with a lacquer-like glazing of the surface of the involved oral area.〔
==Classification==
Depending upon the site of involvement, this condition could be considered a type of gingivitis (or gingival enlargement); a type of cheilitis; glossitis; or stomatitis. Sometimes the lips, the gums and the tongue can simultaneously be involved, and some authors have described this triad as a syndrome ("plasma-cell gingivostomatitis").〔 The mucous membranes of the genitals can also be involved by a similar condition, termed "plasma cell balanitis" 〔 or "plasma cell vulvitis".
Other synonyms for this condition not previously mentioned include atypical gingivitis, allergic gingivitis, plasmacytosis of the gingiva, idiopathic gingivostomatitis, and atypical gingivostomatitis.〔〔 Some of these terms are largely historical.
Plasma cell gingivits has been subclassified into 3 types based upon the cause; namely, allergic, neoplastic and of unknown cause.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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