Generally speaking, pelvic MRI can detect chocolate cysts. Chocolate cysts are clinically a kind of endometriosis, usually the endometrium is ectopic into the ovary, which can be detected by gynecological examination, ultrasound, tumor markers, pelvic MRI or CT. Chocolate cysts usually cause women to have menstrual cramps, heavy menstrual flow, abnormal menstrual cycles, and usually there may be symptoms such as pain in the lower abdomen and a feeling of swelling in the lower back. If abnormalities are detected on examination, appropriate treatment should be chosen according to the actual situation, such as the size and location of the chocolate cyst, as well as the actual symptoms of the patient herself.