[Focal epithelial hyperplasia].

A case of focal epithelial hyperplasia in a 36-year old norwegian caucasian women is described. The patient presented 5 papules, 2-7 mm in diameter. The papules were found on the mucosa of the lower lip and left cheek (Fig. 1). Another elevation was situated on the buccal gingiva in the lower left canine/first premolar region. Histologic examination of the lesion shown in Fig. 1 revealed epithelial hyperplasis with acanthosis (Fig. 2). Cells with swelling of the nucleus and cells with mitosoid nuclear degeneration were seen in the upper stratum spinosum (Fig. 3). A mild degree of lymphocytic infiltration of the connective tissue was present. The histologic appearance is similar to that reported by Clausen (1969).