Answer:
Through the abnormal division of a noncancerous cell, which could also be due to an underlying problem.
Step-by-step explanation:
Well, the only difference between cancerous and noncancerous tumors is that cancerous tumors spread to other parts of the body, while noncancerous tumors stay in only one place. However, they both divide excessively. It's also important to add that the cells in noncancerous tumors are noncancerous, even though they abnormally divide like a cancer cell would in a tumor.