system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
True about endometriosis is/are
assistant
The correct answer is  Most common age group is between 30-45years
Abnormal menstruation seen in 20%
Menorrhagia is seen
If the ovaries are also involved polymenorrhea, epimenorrhagia may be pronounced
Maybe premenstrual spotting seen
Malignancy is rare, commonest being adenocarcinoma