In some cases, fibroids can grow so fast and so large that they outgrow their own blood supply. It can cause hyaline degeneration. This degenerative process can cause calcium deposition leading to calcification. During menopause, the probability of calcification increases by several times. Such fibroids are called calcified fibroids.
Calcified fibroids can be detected by routine OB/GYN or radiological examination, because calcified fibroids are more prominent due to the calcium content.
They differ from standard [non-calcified] fibroids by causing significantly less pain because the calcified fibroid is no longer growing. In general, they have similar symptoms to the non-calcified uterine fibroids.
⇒ Related: Uterine fibroid symptoms
Calcined fibroids are the final stage of a degenerative process. Their sizes don’t change, new symptoms do not appear.