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Nasal Glioma: Is Dermis Involvement Significant?

Nasal gliomas are rare, benign, congenital masses more accurately referred to as sequestered glial tissue. Seven patients with nasal glioma treated by Hugh G. Thomson over the last 28 years are presented with special reference to tumor recurrence after excision and associated naso-ocular cleft. Three of our patients had an associated ipsilateral naso-ocular cleft, and three similar cases have been reported. This association is probably more frequent because a naso-ocular cleft can exist as a forme fruste and be easily overlooked. The first two tumors resected in our series recurred within 10 months; however, no recurrences were seen after a new treatment protocol was initiated in 1972. This consisted of total excision of the skin overlying the tumor if the skin adhered to the mass or if glial elements were seen within the dermis on frozen section. Deep resection margin was also assessed by frozen section of the nasal mucosa or fibrous stalk of the tumor. Accordingly, unnecessary intracranial procedures were avoided without increasing the risk of recurrence.