颅内神经节细胞胶质瘤的影像特征

Medical imaging characteristics of intracranial ganglioglioma

目的探讨颅内神经节细胞胶质瘤的影像学表现特征。方法回顾分析经病理证实的15例节细胞胶质瘤的影像学表现。结果 7例位于颞叶,3例位于额叶,1例病灶位于侧脑室,多发1例分别位于右侧顶叶、枕叶,2例位于小脑蚓部,1例位于小脑半球。实性8例,囊实性6例,囊性1例。增强后可见囊性成分无强化或壁强化,实性成分轻度或明显强化。MRS示实性部分Cho/Cr及NAA/Cr降低,Cho/NAA升高。PWI示实性成分rCBF增高。2例CT表现为等密度,无明显钙化灶。1例PET-CT表现为低代谢。结论节细胞胶质瘤影像学表现具有一定的特点,结合多种影像学技术可以提高术前诊断。

Objective To evaluate the imaging characteristics of intracranial ganglioglioma. Methods Medical imaging characteristics in fifteen patients with intracranial gangliogliomas confirmed by pathology were analyzed. Results The locations of the tumors were as follows： the temporal lobe （7 cases） , the frontal lobe （3 cases） , ventriculus lateralis （ 1 case） , the parietal lobe and the occipital lobe respectively （1 multipe-lesions case） , vermis cerebelll （2 cases） and cerebeUar hemisphere （1 case）. Solid tumors were observed in 8 patients, eystie-olid tumors were observed in 6 patients and one cystic mass was observed in 1 patient. Non-en- hancement or wall enhancement could be seen in cystic components. Mild or obvious enhancement can he seen in solid compo- nents. The solid components showed a reduced Cho/Cr and NAA/Cr ratio, and an increased Cho/NAA ratio in MRS. The rCBF was improved in PWI. CT scan of 2 cases disclosed isodense lesion with non-calcification. 1 ease showed a reduced metabolizer in PET-CT. Conclusion The medical imaging finding of ganglioglioma embodies certain characteristics, may be helpful for the diagnosis preoperatively with a variety of imaging techniques.