患者男,74岁。一年前无明显诱因出现左眶肿胀,伴流泪、分泌物增多,半年前触及左眶外上方肿块而就诊。MRI示:左侧眼眶内泪腺区见团块状等T_1、等T_2信号,DWI(b=800 s/mm~2)上病变轻度扩散受限呈稍高信号,左侧眼外肌显示不清,左侧视神经明显受压内移,左侧上眼睑肿胀;增强扫描显示:左眼眶泪腺区病变呈均匀明显强化,边界较 Male patient, 74 years old. No obvious incentive a year ago left orbital swelling, with tears, increased secretions, six months ago touching the left supraorbital mass and treatment. MRI showed T_1 and other T_2 signals in the lacrimal gland region of the left eye orbital and slight hyperintense lesions on the DWI (b = 800 s / mm ~ 2) were slightly elevated, while the left extraocular muscle showed no Clear, the left optic nerve was significantly pressure within the shift, the left upper eyelid swelling; enhanced scan showed: left eye orbital lacrimal gland area was significantly enhanced lesions, the border more