A formal term for a matter or case that requires attention, often used in legal, administrative, or official contexts. Can refer to a problem, a court case, or an issue under consideration.
A suspicious case occurred late at night.
This case was brought before the court.
The committee discussed the matter.
The police handled this case quickly.
The committee is carefully deliberating on this matter.
A case involving an information leak was reported.
問題 is a general, everyday word for a 'problem' or 'issue', whereas 事案 is a specialized, formal term used in official or legal reports.
Compound of 事 (thing, matter) and 案 (plan, proposal, concern). The combination conveys a matter that is under consideration or needs to be dealt with.