Final answer:
A steatoma usually appears on the skin and is a benign condition, unlike a metastasis which is the spread of cancer to different body parts including the brain, lungs, bones, and liver.
Step-by-step explanation:
A steatoma, more commonly known as a sebaceous cyst, typically appears on the skin and may occur on various parts of the body. It is not the same as metastasis which is the process by which cancer cells spread to different parts of the body. The most common sites for metastases include the brain, lungs, bones, and liver. Melanomas, which are a type of skin cancer, present as large brown or black patches with uneven borders and a raised surface. Metastasis signifies an advanced stage of cancer and is associated with most cancer deaths, whereas a steatoma is usually a benign skin condition.