On MRI, there was iso-or slight hypointensity than muscle on T_1WI, hyperintensity, on T_2WI, hypo-but slight hyperintensity than CSF on T_1WI, and hyperintensity on T_2WI in cystic degeneration.

• T_1WI示肿瘤等或稍低于胸壁肌信号，囊变部分稍高于脑脊液的低信号； T_2WI呈高信号。