How is schoolboy right bosom hard lump to return a responsibility

There are hard lumps on the right chest of boys. Generally, it is related to factors such as chest wall injury, sebaceous cyst and lipoma.

1. Chest wall injury.

Hematoma or bruise may form after impact or injury. This may be manifested as hard lumps.

2. Sebaceous cyst.

If the sebaceous duct in the chest skin is blocked, it can lead to sebaceous stasis, and then retention to form cysts, or hard lumps or lumps.

3. Lipoma

Lipoma is a benign tumor formed by excessive growth of fat cells and can occur in any part of the body with fat tissue. As the tumor grows, it can lead to local hard lumps.