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Peripheral ameloblastoma of the gingiva: the importance of diagnosis
Author(s) -
LópezJornet Pía,
BermejoFenoll Ambrosio
Publication year - 2005
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.2004.00627.x
Subject(s) - ameloblastoma , pathology , lesion , medicine , biopsy , malignant transformation , peripheral , epithelium , stroma , soft tissue , odontogenic tumor , oral mucosa , anatomy , maxilla , immunohistochemistry
Background: Peripheral ameloblastoma is an extremely rare epithelial odontogenic tumor, limited to the soft tissues of the gums or oral mucosa. Although the lesion is benign, it may be locally aggressive. Methods: The present study describes the case of a 31‐year‐old male presenting a firm, symptomless tumor mass of irregular appearance and measuring approximately 12 mm in diameter, located in the distal zone of 4.7. Results: An excision biopsy was performed. The lesion was covered with hyperplastic squamous epithelium, with islets of epithelial cells located at subepithelial level. The cells in the peripheral zone adopted a palisade distribution, and presented the appearance of a lax reticulum at central level. A fibroblastic stroma was observed between the islets. The diagnosis was peripheral ameloblastoma. Conclusions: Although the origin of the lesion remains unclear, it is able to recur and undergo malignant transformation. Consequently, peripheral ameloblastoma should not be viewed as a harmless mass.