Instructions: Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.
Input: Abstract: The authors present a case of intranasal schwannoma with extension into the intracranial compartment. Computed tomographic findings are presented, and a combined intranasal and subfrontal operative approach is described. The pathology, origin, and clinical characteristics of intranasal schwannomas are reviewed.
Output:
Adult