Gingival granular cell tumors of the newborn (congenital “epulis”)

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Abstract
The clinical and pathologic features of 24 gingival granular cell tumors in newborns are reviewed. These tumors occurred exclusively in females and were localized on the anterior alveolar ridge (maxilla: 15; mandible: 9); the gingiva overlying future canine and lateral incisor teeth was most frequently involved. Follow-up data for 15 patients (average duration 15 years) indicated a lack of tumor recurrence despite incomplete resection in 11 instances. Tumors resected early in the newborn period were larger (maximum diameter 2.0 cm) and showed confluent to nodular submucosal growth with relatively less collagen. Some showed features suggesting involution. The histology in most cases supported a mesenchymal origin rather than one from odontogenic epithelium. Immunohistochemical staining for selected oncofetal and other antigens was negative. Electron microscopy did not entirely resolve the controversy regarding histogenesis.

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