Radiation-Induced Pericardial Disease: Mechanisms, Diagnosis, and Treatment.

Radiotherapy-related pericardial disease is common, but despite radiotherapy being a cornerstone of many cancer treatments, this disease entity is relatively underrepresented in clinical trials, resulting in a paucity of research data on pathophysiology and management. Since the development of innovative cancer treatments, survival has significantly improved. Therefore, the importance of long-term treatment-related side effects increases, most notably cancer treatment-related cardiovascular toxicity. In patients undergoing radiotherapy as a part of their cancer treatment, radiotherapy-related pericardial disease can manifest early (during or shortly after radiotherapy administration) or very late (several years to decades after treatment). This exceptionally long latency period confronts physicians with treatment-related side effects of radiotherapy regimens that may have been abandoned already.