Unusual solitary neurofibroma on the lower lip of a child
A 12-year-old Brazilian male reported to the Department of Pediatric Dentistry, School of Dentistry, University of Cuiabα, Cuiabα, Brazil. The child presented with bothered by a swelling on the lower of his lip. The nodule measured 0.6 × 0.3 cm and was reported to have appeared 2 years ago. On clinical examination, the asymptomatic lesion was identified at the middle border of his lower lip, presenting sessile soft tissue growth and smooth surface with a color similar to normal mucosa [].\nThere was neither any history of injury to the lower lip nor any source of stimulus that could be related to the lesion. Medical and familial history did not contribute to the diagnosis. Based on the clinical appearance of the lesion, differential diagnosis was either traumatic fibroma or mucocele. An excisional biopsy was planned to establish a definitive diagnosis.\nThe surgical procedure was performed with under local anesthesia and the lesion was completely removed by a no. 15 Bard-Parker blade. Three interrupted silk 4.0 sutures were placed to achieve hemostasis. The excised tissue was sent for histopathological investigation. On the postoperative visit after 2 weeks, sutures were removed and healing was satisfactory. After 3 weeks, the lower lip was completely healed.\nHistopathological investigation revealed that the tumor was composed of interlacing bundles of elongated cells with wavy nuclei and small nerve fibers. These cells are bland and disorderly with intracellular collagen strands [Figures and ]. Immunohistopathologic assessment showed cells positive for S-100 [Figures and ]. Pathological diagnosis was a NF with no signs of malignancy. There were no signs of recurrence at the 1-year follow-up visit [].