expression
requiring medical treatment
Used in medical contexts to indicate that a condition, injury, or finding needs treatment. Often appears in reports, charts, or formal descriptions.
この症状は要治療と判断されました。
This symptom was judged to require medical treatment.
要治療の歯が何本かあります。
There are several teeth that need treatment.
要観察 means 'requiring observation' and is used in similar medical contexts, but for conditions that need monitoring rather than immediate treatment.
Compound of 要 (need, require) and 治療 (medical treatment). A straightforward Sino-Japanese expression.