Background: Common mental disorders (CMD) are the most usual reactions following cancer diagnosis causing significant psychological sufferings. Even though research-based evidence is necessary for mental health promotion and intervention activities, there is a scarcity of evidence in Ethiopia to assist policy makers' efforts in reforming mental health care particularly that of cancer patients.
Objective: The main objective of this research is to assess the magnitude of common mental disorders and associated factors among cancer patients who have a follow-up treatment at Black Lion Specialized Hospital, Addis Ababa, Ethiopia.