What is the cause of the low-density pelvic shadow with a maximum diameter of about 39 mm and ring-like enhancement?

Pelvic low-density shadow with a maximum diameter of about 39mm showing ring-like enhancement is found in the imaging examination, which may be cystic tumor, or it may be caused by pelvic adhesion or pelvic inflammatory nodule.
Pelvic low-density shadow with a maximum diameter of about 39mm showing ring-like enhancement may be cystic tumors, which are mostly benign tumors, and patients usually have no other uncomfortable symptoms.
If the patient has abdominal pain, abnormal vaginal secretions and other symptoms, most of the existence of pelvic inflammatory disease, due to the presence of inflammation, can cause pelvic adhesions or pelvic inflammatory nodules, may appear pelvic hypodense shadow maximum diameter of about 39mm in a ring-like enhancement of the situation.
Pelvic hypodense shadow with a maximum diameter of about 39mm ring-shaped enhancement may also have other causes, it is recommended to consult a doctor in time, under the guidance of the doctor to improve the relevant examination, clear cause of the cause of the treatment, so as to avoid delaying the condition.