Suddenly developed an ovarian cyst with fluid

Patient's question:

Due to an accidental pregnancy and subsequent miscarriage, I had a T-shaped IUD inserted on October 13, 2008. I have a severe allergy to metal. Metal belt buckles, jewelry clasps, and other items cause redness and swelling upon contact within a day. I once asked my doctor if it was okay to wear it, and they said it should be fine since it contacts the mucous membrane. However, after wearing it, I experienced persistent abdominal pain. During this period, I had four ultrasound examinations, and both the uterus and adnexa showed no abnormalities. As of July 1 of this year, a physical examination revealed severe cervical inflammation, leading to the removal of the IUD. Since then, I have still experienced intermittent mild lower abdominal pain. On October 11, an ultrasound suddenly detected 6.24.2cm ovarian encapsulated fluid, with CA125 levels normal. I would like to know if the fluid is caused by inflammation or if it is an ovarian cyst. From July 1 to October

Doctor's answer:

In your case, it is still considered to be caused by inflammation, but it has become quite large. Generally, surgery is indicated if it exceeds 5 cm. However, considering that the symptoms are not yet very obvious, you can start with medication and intravenous treatment. If there is no improvement after 15 to 30 days of treatment, or if it continues to grow, surgical treatment will be necessary.