Which disorder is characterized by the formation of angina?

Explanation

### Step-by-Step Solution:

1. **Understanding Angina**: Angina is a type of chest pain that occurs when the heart muscle does not get enough blood. This lack of blood flow is often due to narrowed arteries.

2. **Identifying the Cause**: The primary cause of angina is reduced blood flow to the heart, which can occur due to various cardiovascular disorders.

3. **Linking Angina to a Disorder**: The disorder that is specifically characterized by the formation of angina is known as atheroma.

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