A cystic nodule on the left iliac vessel is a cystic nodule on the left iliac vessel on ultrasound and CT. Cystic nodules are usually benign tumors, and treatment needs to be determined based on the specific condition. A cystic nodule next to the left iliac vessel is an imaging description of the lesion on ultrasound and CT. Cystic nodules generally refer to benign tumors. If the nodule is small and does not affect the surrounding tissues, it can be asymptomatic and is often detected during a physical examination. If the nodule is large and compresses the surrounding tissues, blood vessels or nerves, there may be localized pain symptoms and surgery may be required to remove the tumor. Left iliac paravascular cystic nodule should go to the regular hospital in time, the doctor according to the symptoms, signs and auxiliary examination to correctly determine and give the correct treatment.