The condition where tissue from the uterine lining grows outside the uterus is called .

The condition where tissue from the uterine lining grows outside the uterus is called endometriosis. In this condition, endometrial-like tissue can be found on other organs within the pelvic cavity, such as the ovaries, fallopian tubes, and the outer surface of the uterus. It can also occur in areas beyond the pelvic region, such as the bladder, intestines, or even in rare cases, the lungs.

Endometriosis can lead to various symptoms, including pain (often severe), especially during menstruation, excessive bleeding, and infertility. The root cause of endometriosis is not fully understood, but it is believed to involve a combination of genetic, hormonal, and environmental factors. Treatments may include pain management strategies, hormonal therapies, or surgery, depending on the severity of the symptoms and the individual's reproductive goals. Understanding this condition is vital for those who may experience its symptoms, as early diagnosis and treatment can significantly improve quality of life.