肌肉软组织淋巴瘤的影像诊断

Imaging Diagnosis of Muscular Soft Tissue Lymphoma

目的分析肌肉软组织淋巴瘤的影像表现,探讨CT和MRI对肌肉软组织淋巴瘤的诊断价值。方法回顾性分析经病理证实的7例软组织淋巴瘤的CT或MRI影像表现,其中MR检查4例,CT检查3例。结果影像诊断与病理结果对照,术前影像诊断肌肉软组织淋巴瘤2例,误诊为肉瘤2例,误诊为转移瘤2例,误诊为纤维瘤1例。MRI表现为T1WI等信号2例、略低信号2例,T2WI呈稍高信号,反转恢复序列均呈稍高信号,肿瘤内信号均匀、坏死及囊变少见;MR增强扫描均匀强化2例,不均匀强化1例,1例未行MR增强检查。CT平扫密度均匀,与正常肌肉相仿,增强扫描呈均匀中度强化。结论软组织淋巴瘤的CT和MRI表现有一定特点,影像学检查有助于肌肉软组织淋巴瘤的诊断。

Objective To analyze the imagine manifestation of muscular soft tissue lymphoma and explore CT and MRI features. Methods This was a retrospective review of CT or MRI studies of 7 patients with histologically confirmed diagnosis of muscular soft tissue lymphoma, including MRI in 4 cases, CT in 3 case. Results Imaging Diagnosis was compared with pathological results, diagnosis before the operation were muscle lymphoma（2 cases）,sarcoma（2 cases）, metastatic tumor（2 cases） and fibroid tumor（1 case）. On MR T1WI,2 were intermediate signal intensity and 2 were slightly low signal intensity. On MR T2WI, all were slightly high signal intensity. On FLAIR, all were slightly high signal intensity. The lesions were homogeneous,and systis and necrosis in lesions were rare. In the 3 conrtast-enhanced cases,2 were homogeneous and 1 was inhomogeneous. The les-ions were homogeneous, which were isoettenating to normal muscle on unenhanced CT images, after intravenous injection of contrast media, the lesions enhanced homogeneously. Conclusion There are several characteristics on the imaging of CT and MR of muscular soft tissue lymphoma, and image examination are helpful for the diagnosis of muscular soft tissue lymphoma.