Excision of nasal dermoids with intracranial extension - anterior small window craniotomy approach

Rebecca L Heywood, Marie J Lyons, Lesley A Cochrane, Richard Hayward, Benjamin E J Hartley
International Journal of Pediatric Otorhinolaryngology 2007, 71 (8): 1193-6

OBJECTIVE: Dermoid cysts are the most common midline congenital nasal masses and may extend intracranially. They commonly become infected, may distort nasal growth, and are cosmetically unacceptable. The treatment of nasal dermoids is complete surgical excision. Removal of any intracranial extension traditionally required a bicoronal incision and frontal craniotomy, with significant associated morbidity. This retrospective study describes a new minimally invasive approach for excision of the intracranial component of the dermoid.

METHODS: We present three cases where a brow incision was used. The intracranial part was removed by cutting a small window in the frontal bone directly over the dermoid, minimizing complications of formal craniotomy.

RESULTS: Good access allowing complete excision of the dermoid and very low morbidity was achieved in all patients. The dura was breached in one patient at operation but this was easily repaired with a periosteal patch. All patients recovered quickly and hospital stay was short. The resultant scar was cosmetically acceptable.

CONCLUSION: The use of a brow incision and small window craniotomy is a successful low morbidity technique for excision of nasal dermoids with intracranial extension.

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