Yang Hu, Niu Liang, Zhang Yinian, Jia Juan, Li Qiao, Dai Junqiang, Duan Lei, Pan Yawen
Department of Neurosurgery, Lanzhou University Second Hospital, China.
Department of Anesthesiology, Lanzhou University Second Hospital, China.
Clin Neurol Neurosurg. 2018 Sep;172:87-89. doi: 10.1016/j.clineuro.2018.07.004. Epub 2018 Jul 2.
Subdural osteomas are benign neoplasms that are rarely encountered. We report the case of a 64‑year‑old female patient with a left temporal subdural osteoma.
The patient presented with intermittent dizziness that first began two years earlier. Non-contrast computed tomography revealed a densely calcified left temporal extra-axial mass. Magnetic resonance imaging of the lesion revealed signal loss on T1-weighted and T2-weighted images and non-enhancement on Gadolinium enhanced T1-weighted images, and diffusion-weighted and ADC images demonstrated reduced values attributed to calcium-induced signal loss. Histologically, the lesion predominantly consisted of lamellar bone without bone marrow elements. The patient underwent stereotactic magnetic resonance imaging-guided neurosurgical resection and recovered without complication.
Subdural osteomas may not be enhanced on magnetic resonance imaging. Surgical tumourectomy can be considered for symptomatic patients with subdural osteomas.
硬脑膜下骨瘤是一种罕见的良性肿瘤。我们报告一例64岁女性左颞部硬脑膜下骨瘤患者。
患者于两年前开始出现间歇性头晕。非增强计算机断层扫描显示左颞部轴外有一高密度钙化肿块。病变的磁共振成像显示在T1加权和T2加权图像上信号缺失，钆增强T1加权图像上无强化，弥散加权成像和表观扩散系数图像显示由于钙诱导的信号缺失而值降低。组织学上，病变主要由无骨髓成分的板层骨组成。患者接受了立体定向磁共振成像引导下的神经外科切除术，术后恢复良好，无并发症。
硬脑膜下骨瘤在磁共振成像上可能无强化。对于有症状的硬脑膜下骨瘤患者，可考虑手术切除肿瘤。
