1.Choanal atresia is often related to the presence of a congenital abnormality and only a few cases involve the occurrence of mucosal fibrosis of the surrounding choana after trauma.
1.Now, sometimes secondary amenorrhea can occur because of premature ovarian failure - which is when the ovarian follicles undergo accelerated atresia and get depleted before the age of 40, resulting in early menopause.