Radiation-Induced Coronary Artery Disease Manifested at Very Late Phase

Area of Science:

• Cardiology
• Oncology
• Radiation Oncology

Background:

• Cancer survivors are living longer due to therapeutic advances.
• Mediastinal radiation therapy is a common treatment for various thoracic malignancies.
• Late adverse effects of cancer treatments require ongoing investigation.

Observation:

• A 51-year-old female presented with congestive heart failure.
• Coronary artery disease, specifically occlusion of septal perforators, was diagnosed.
• The patient had a history of mediastinal radiation therapy 19 years prior for a tumor.

Findings:

• The patient lacked conventional coronary risk factors (e.g., hypertension, hyperlipidemia, diabetes, smoking).
• The coronary artery disease was attributed to the previous radiation therapy.
• This suggests a potential causal link between mediastinal radiation and late-onset cardiovascular complications.

Implications:

• Coronary artery disease should be considered a very late complication of radiation therapy.
• Cardiovascular surveillance may be necessary for patients with a history of mediastinal radiation, even without traditional risk factors.
• Increased awareness can lead to earlier detection and management of radiation-induced heart disease in cancer survivors.