what is a collapsed follicle in an ovary
Follicular cyst of ovary This type can form when ovulation doesn't occur, and a follicle doesn't rupture or release its egg but instead grows until it becomes a cyst, or when a mature follicle involutes (collapses on itself). It usually forms during ovulation, and can grow to about 7Â cm in diameter. It is thin-walled, lined by one or more layers of granulosa cell, and filled with clear fluid.