原发性睾丸淋巴瘤的CT和MRI评价

The CT and MRI diagnosis of primary testicular lymphoma

目的分析总结原发性睾丸淋巴瘤的CT和MRI表现以提高对该病的认识。方法回顾分析8例经手术病理证实的睾丸原发性淋巴瘤的CT和MRI及临床表现,同时复习相关文献。结果 CT表现,肿物边缘清楚,平扫呈均匀等密度,增强扫描中度强化;MRI表现肿块T1WI低、等信号,T2WI大部分呈稍低信号,部分呈稍高及等信号,DWI序列呈高信号,增强扫描病灶大部分均匀强化,小部分不强化或轻中度不均匀强化。结论原发性睾丸淋巴瘤的CT和MRI表现有一定的特征性,有较好诊断价值。老年患者出现无痛性的睾丸肿大,要首先考虑到睾丸淋巴瘤的可能性。

Objective To investigate the CT and MRI imaging of primary testicular lymphoma. Methods The CT and MRI imagings of 8 patients with primary testicular lymphoma diagnosed pathologically were retrospectively reviewed. Re- suits The tumors showed relatively homogeneous density on plain CT imaging, and revealed moderate enhancement after contrast injection. At MR imaging, the tumors appeard as hypointense or isointense on T1WI . Most part of the lesions showed slightly low signal on TzWI, and the other small part showed slightly higher signal or isointense. The DWI se- quence was high signal. On enhanced scanning, most lesions showed homogeneous enhancement, the rest did not enhance or showed mild to moderate inhomogeneous enhancement. DWI sequence showed high signal. Conclusion The CT and MRI imagings of primary testicular lymphoma show some characteristic signs, and play an important role in the diagnosis of this disease. The lymphoma should be considered firstly in gerontal patients with painless solid enlargement.