Intrabony Schwannoma of the Mandible: Case Report and Review of Literature

Abstract

This paper focuses on the case of intrabony mandibular schwannoma in a 39 yrs healthy male who was addressed by his dentist for an asymptomatic radiolucency of the left mandibular corpus. Computed Tomography Dentascan showed a soft tumour continuous to the path of the inferior alveolar nerve. Confirmation was made after surgical excision and careful histological examination. Radiolucent images of the mandible are frequently met by dentists and oro-facial surgeons, and suggest first odontogenic cysts because of their high frequency. But even if sheath nerve tumours are very rare, this case report reminds the necessity to keep them in mind.

An Unusual Representation of an Odontogenic Cyst Engulfing the Inferior Alveolar Nerve

“…The sensory function of the IAN and the morphology of the MC have been reported to be affected by neural origin lesions such as intraosseous neurofibroma [17] and intraosseous intraneural perineurioma [8]. Conversely, IAN-derived schwannomas were reported to be asymptomatic; however, the borders of the MC were not detectable within the region of the lesion on the OPG [18,19], which was also mutual with our case.…”

Common conditions associated with mandibular canal widening: A literature review

“…The head and neck are affected in 24%–48% of cases, and schwannoma shows a predilection for soft tissue. Intraosseous schwannoma is a rare occurrence because central schwannomas account for fewer than 1% of all primary benign bone tumors 16. The affected patients were reported to have a mean age of 34 years, and it was found to have a predilection for females 3.…”

Mega canal dentario en mandíbula Reporte de caso y revisión de literatura

“…Diversos autores reportan una prevalencia del 25 al 45% de estos tumores en cabeza y cuello, con predilección por la lengua, seguida de paladar, mucosa yugal, labios y encías [3,4]. La mayoría de los autores coinciden en que una manifestación intraósea mandibular es rara al representar el 1% de los tumores óseos primarios benignos, de los cuales la rama y el cuerpo mandibular son la ubicación más común a través del canal nervioso [3,[5][6][7][8][9].…”

“…Pueden darse diversos diagnósticos diferenciales asociados a patologías benignas como quistes, queratoquistes, ameloblastomas y lesiones vasculares, pero la confirmación es histopatológica, siendo imposible determinar por este medio si el origen fue en el tronco principal o en una rama periférica del nervio dentario inferior [4,8,12,13]. Gracias a la proteína s-100 que es específica para el tejido nervioso, es posible marcar el espécimen biopsiado y sugerir si el origen del tumor es de neurolemocitos [3,7].…”