This is the 19368th most frequent Korean word.
암이
"암이" in Korean means "cancer."
암이 refers to the disease 'cancer' in its subject form, indicating it is the topic of the sentence.
암이 치료가 가능해졌습니다.
Cancer has become treatable.
암이 here refers to a 'clue' or 'hint,' indicating the main issue in the subject role of the sentence.
그가 말한 암이 바로 문제의 핵심입니다.
The clue he mentioned is exactly the core of the problem.
암이 functions as 'cancer,' emphasizing the concern that has been alleviated in the subject form.