If you have an unidentified growth somewhere on your body, it’s difficult not to worry.
These two types of lumps are different, however.
A cyst is usually a small, fluid-filled sac that appears on your body.

Meanwhile, a tumor is any area with abnormal tissues growing or swelling (viaMayo Clinic).
A tumor can be either benign or malignant.
Both types of issues form anywhere on your skin, tissues, bones, or organs.

How can you tell the difference?
Often tumors are fast growing and firm, whereas cysts are tender and move around under your skin.