3 sentences

1. 癌细胞已经转移到了肺部。

   ái xì​bāo yǐ​jīng zhuǎn​yí dào le fèi​bù.

   The cancer cells have metastasized to the lungs.

   Source: Dong Chinese Dictionary

2. 这种肿瘤被诊断为原位癌。

   zhè zhǒng zhǒng​liú bèi zhěn​duàn wéi yuán​wèi ái.

   This tumor was diagnosed as carcinoma in situ.

   Source: Dong Chinese Dictionary

3. 吸烟会增加患肺癌的风险。

   xī​yān huì zēng​jiā huàn fèi ái de fēng​xiǎn.

   Smoking increases the risk of lung cancer.

   Source: Dong Chinese Dictionary