In which of the following disorders do the tissues of the uterine lining grow outside the uterus?

A) Endometriosis
B) Fibroids
C) Cervicitis
D) Vaginitis
E) Dysmenorrhea

Endometriosis

A condition in which tissues that make up the lining of the uterus grow outside the uterus.

Uterine Lining

The inner layer of the uterus, known as the endometrium, which thickens during the menstrual cycle in preparation for potential pregnancy.

Uterus

A female reproductive organ where a fertilized egg implants and grows during pregnancy.