Does pelvic effusion require treatment?

Patient's question:

MRI Description: Anterior uterine position, uterine size approximately 56.42.40mm, normal morphology, smooth capsule, uniform muscle layer echo, endometrial line clear on the left, thickness about 9mm. Left ovary size 26 divided by 17mm, right ovary size 28 divided by 19mm, free liquid dark area observed in the pelvic cavity, depth about 11mm. CDFI, no obvious abnormal blood flow signals observed. MRI confirmed, pelvic effusion. Previous treatment and outcome: MRI Description: Anterior uterine position, uterine size approximately 56.42.40mm, normal morphology, smooth capsule, uniform muscle layer echo, endometrial line clear on the left, thickness about 9mm. Left ovary size 26 divided by 17mm, right ovary size 28 divided by 19mm, free liquid dark area observed in the pelvic cavity, depth about 11mm. CDFI, no

Doctor's answer:

Generally, pelvic effusion can be divided into two types: physiological effusion and pathological effusion. Physiological pelvic effusion often occurs after menopause or in the early stages of pregnancy and usually resolves naturally without the need for treatment. However, the majority of pelvic effusions are caused by inflammation, specifically due to the exudation resulting from chronic pelvic inflammatory disease. Therefore, it is recommended that you come back to the hospital for a follow-up examination after your menstrual period to determine the nature of the effusion. If it is pathological, it is necessary to follow the doctor's advice and receive early, targeted treatment.