onkologisen
Onkologisen is a Finnish adjective that translates to "oncological" in English. It is derived from the noun "onkologia," which is the study of cancer, or oncology. Therefore, "onkologisen" is used to describe anything related to oncology, cancer, or the treatment of cancer.
For example, one might encounter the term "onkologisen sairauden" which translates to "oncological disease" or "cancerous