CT and MRI findings of intra-parenchymal and intra-ventricular schwannoma: a series of seven cases

• Published in: BMC medical imaging Vol. 22; no. 1; pp. 1 - 197
• Main Authors: Zhang, Zhen-yi, Mo, Zhi-qing, Zhang, You-ming, Yang, Hong, Yao, Bin, Ding, Hao
• Format: Journal Article
• Language: English
• Published: London BioMed Central Ltd 17.11.2022; BioMed Central; BMC
• Subjects: Calcification; Computed tomography; Contrast agents; Contrast media; CT imaging; Edema; Headaches; Hydrocephalus; Imaging feature; Intra-ventricular schwannoma; Intracranial schwannoma; Lesions; Magnetic resonance imaging; Medical imaging; Patients; Schwann cells; Tumors; Ventricle
• ISSN: 1471-2342; 1471-2342
• DOI: 10.1186/s12880-022-00917-z

Abstract Objective To analyze the computed tomography (CT) and magnetic resonance imaging (MRI) features of patients with intra-parenchymal and intra-ventricular schwannoma. Methods The CT and MRI features of seven cases with intra-parenchymal and intra-ventricular schwannoma were analyzed retrospectively. Results There were four men and three women (median age, 25 years; range, 12–42 years) in this study. The median tumor size was 4.4 cm (range, 3.1–6.5 cm). The mass was, respectively, round in four cases (57.1%), lobulated in two cases (28.6%) and oval in one case (14.3%). All tumors were well-circumscribed. Septa in the mass could be observed in three cases (42.9%), and nodular calcification was observed in two cases (28.6%), which peritumoral edema (n = 3, 42.9%) and hydrocephalus (n = 3, 42.9%) could be observed. Most of these lesions (n = 6) presented iso-hypointensity on T1-weighted images and iso-hyperintensity on T2-weighted images, except one lesion showing low intensity on T2WI. In addition, a fluid–fluid level was observed in one case. After contrast agents’ injection, all masses illustrated heterogeneously moderate to marked enhancement. Conclusions A well-defined solid and cystic mass with calcification and moderate to marked delayed enhancement may be an objective account of intra-parenchymal or intra-ventricular schwannoma.