This is the 126th most frequent Chinese word.
患者
"Patient" (a person receiving medical care).
Here, '患者' is used as a noun referring to individuals suffering from an illness, in this case, cancer.
那个医院里有许多癌症患者。
That hospital has many cancer patients.
In this sentence, '患者' denotes a specific individual who requires medical attention, associated with holding records.
医生正在询问患者的医疗历史。
The doctor is inquiring about the patient's medical history.
The word '患者' here is used collectively to refer to people who are receiving or in need of care.