A 12-year-old girl presented with headache, nasal voice, and anosmia. Magnetic resonance imaging demonstrated a 11 × 9 × 8-cm tumor extending from the nasal cavity to the frontal lobes. Histological analysis was consistent with transitional meningioma WHO grade I. As far as we know, this is the first reported case of a giant olfactory groove meningioma invading the nasal cavity through the anterior cranial base. Complete surgical removal was accomplished with excellent result via a staged endoscopic and transcranial approach. A microvascularized vastus laterallis flap was used for reconstruction. Surgical options and technical details in the management of this lesion are reviewed.

一名 12 岁女孩出现头痛、鼻音和嗅觉丧失。磁共振成像显示一个 11 × 9 × 8 厘米的肿瘤从鼻腔延伸到额叶。组织学分析与移行性脑膜瘤WHO I级一致。据我们所知，这是首例报道的巨大嗅沟脑膜瘤通过前颅底侵入鼻腔的病例。通过分期的内窥镜和经颅方法完成了完全的手术切除，效果极佳。微血管化的股外侧肌皮瓣用于重建。回顾了治疗该病变的手术选择和技术细节。