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Figure 1: Preoperative and postoperative magnetic resonance imaging (MRI) and histopathological examination in Case 1 (a) and (b) MRI scan showed a round anterior cranial fossa lesion. Ethmoidal sinus was invaded, and the middle line was pushed to the opposite side. (c) and (d) showed that the lesion was solid cystic and was signifi cantly contrasted after the patient was injected contrast medium. (e) and (f) showed that the lesion was completely removed. (g) showed typical schwannoma pathological characteristics (H and E, ×200)

Figure 1: Preoperative and postoperative magnetic resonance imaging (MRI) and histopathological examination in Case 1
(a) and (b) MRI scan showed a round anterior cranial fossa lesion. Ethmoidal sinus was invaded, and the middle line was pushed to the opposite side. (c) and (d) showed that the lesion was solid cystic and was signifi cantly contrasted after the patient was injected contrast medium. (e) and (f) showed that the lesion was completely removed. (g) showed typical schwannoma pathological characteristics (H and E, ×200)