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目的探讨肝门部神经鞘瘤的CT、MRI表现,提高对该病的认识和诊断水平。资料与方法回顾性分析经手术病理证实的6例肝门部神经鞘瘤患者的临床、CT、MRI资料,其中2例行CT、MRI检查,3例行CT检查,1例行MRI检查,分析其CT、MRI表现特征并与病理结果对照。结果肝门部神经鞘瘤的MRI表现:T1WI序列表现为低或等信号,T2WI序列为等、高信号。CT表现:CT平扫表现为等密度或稍低密度、边界清晰的肿块,其内可见散在小片状低密度坏死区。CT、MRI增强呈延迟强化或不均匀强化。CT、MRI可见病灶周围有完整包膜,边界清晰。病理以瘤细胞呈梭形、外见完整纤维包膜为特征,免疫组织化学S-100、NSE、Vimentin阳性。结论肝门部神经鞘瘤具有特征性CT、MRI表现,CT、MRI对肝门部神经鞘瘤的诊断及鉴别诊断具有重要价值。
Objective To investigate the CT and MRI manifestations of schwannomas in the hilar region and to improve their understanding and diagnosis of the disease. Materials and Methods The clinical, CT and MRI data of 6 patients with hilar neurilemoma confirmed by surgery and pathology were retrospectively analyzed. Among them, CT and MRI were performed in 2 patients, CT was performed in 3 patients and MRI was performed in 1 patient The CT, MRI features and pathological findings. Results MRI findings of hepatic portal schwannomas showed that T1WI sequences showed low or equal signals and T2WI sequences had equal and high signals. CT manifestations: CT scan showed equal density or slightly lower density, clear boundary of the mass, which can be seen scattered in small pieces of low-density necrosis. CT, MRI showed delayed enhancement or uneven enhancement. CT, MRI visible lesions around the complete capsule, a clear boundary. Pathological tumor cells were fusiform, see the complete appearance of the fibrous capsule characterized by immunohistochemistry S-100, NSE, Vimentin positive. Conclusions Hepatoma schwannoma has characteristic CT and MRI manifestations. CT and MRI are of great value in the diagnosis and differential diagnosis of schwannoma of the hilar.