yī shēng / shuō / tā / shēn shang / de / zhī fáng liú / shì / liáng xìng / de / bù yòng / tài / dān xīn

医生说他身上的脂肪瘤是良性的，不用太担心。

The doctor said the lipoma on his body is benign, so he doesn't need to worry too much.