Webdec 21, 2022 · a chest lump can be caused by injuries, infections, tumors, or other growths. Learn how to diagnose and treat different types of chest lumps, and when to see a doctor. When to see a doctor. Causes of a lump on your chest can include a cyst, abscess, lipoma, or benign tumor. Webjul 11, 2024 · a chest wall lump can be caused by various conditions, such as warts, cysts, lipomas, or cancer. Learn about the common causes, symptoms, and treatment options. Weba chest wall tumor is…