他正在接受癌症治疗。

Tā zhèngzài jiēshòu áizhèng zhìliáo.

He’s undergoing cancer treatment.

医生说他得了癌症。

Yīshēng shuō tā déle áizhèng.

The doctor said he has cancer.

我爷爷因为癌症而去世了。

Wǒ yéye yīnwèi áizhèng ér qùshì le.

My grandpa passed away from cancer.