CT 、MRI and~1H-MRS Diagnosis of Central Neurocytoma:A Report of 7 Cases with Literature Review / 实用放射学杂志

ABSTRACT

Objective To discuss CT,MR and~1H-MRS features of central neurocytoma(CNC).Methods Imaging findings ofneurocytomas in 7 cases confirmed by pathology were retrospectively analyzed with literature review.2 cases were examined by CT、MR and~1 H-MRS,2 cases only by MR,and 3 cases only by CT.Results All the tumors were located in the lateral ventricles.There were different degree hydrocephalus in all cases.The masses were heterogeneous appearance on CT with necrotic area and fine to course calcifications.Heterogeneous enhancement was seen in the solid portion.The tumors were isointense and hypointense on T_1WI and heterogeneous on T_2WI.Heterogeneous enhancement was also seen on MRI.The in vivo~1H-MRS showed prominent choline(Cho) and low N-acetyl aspartate(NAA) compared to the normal.Conclusion Central neurocytoma should be considered when a tumor was located at the lateral ventricles especially septum pellucidum in young patients.CT,MR and~1H-MRS are helpful in making a preoperative diagnosis.