JAPANESE JOURNAL OF ORAL & MAXILLOFACIAL SURGERY

Vol. 54 No. 3       2008

ISSN: 0021-5163      UBIC: 151-J

ABSTRACT

Traumatic neuroma is a hyperplastic lesion caused by the superfluous regeneration of nerve cells at a cut surface. We report a case of traumatic neuroma arising in the lower hp of a 7-year-old boy. The patient was involved in a traffic accident in May 2003, causing a bone fracture of the femoral region and laceration of the lower lip. The lower hp was sutured surgically. Shortly after treatment, the patient noticed a swelling in the right side of his lower lip and consulted our clinic for a detailed examination on January 7, 2004. Macroscopically, an elastic and hemispheric painless soft mass with a diameter of 1.0 cm was noticed at the suture line. Under a clinical diagnosis of mucocele, we performed enucleation of the tumor. Histologicahly, irregular proliferation of the peripheral nerve cells and nodular formation of Schwann cells were observed. The tumor was diagnosed to be a traumatic neuroma. During 2 years of postoperative follow-up, the patient has had no evidence of recurrence. Key words: traumatic neuroma, lower lip.

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