These malignant, or cancerous, tumors start in the outer layer of the adrenal gland (the adrenal cortex). Although very rare — only 5 to 10 percent of all adrenal tumors are malignant — they’re often aggressive and can cause many symptoms and discomforts.
Symptoms of these tumors include:
- fluid retention (leading to bloating)
- unusual excess hair growth
- unusual skin changes
If the tumor presses against other organs, it may cause symptoms such as abdominal pain, an unusual feeling of fullness, and unexpected weight loss.