I have uterine fibroids, which mentions calcification of fibroids. What is the meaning of calcification?

Patient's question:

No

Doctor's answer:

Hello, the development and degeneration of uterine fibroids can be divided into five types: first is hyalinization; second is cystic degeneration; third is red degeneration; fourth is sarcomatous transformation; fifth is calcification. Therefore, if calcification of uterine fibroids is detected, it indicates that the uterine fibroid has already undergone degeneration.