Circumferential enhancement is generally a descriptive statement that is commonly used when imaging tests are done to enhance the scan, and is generally used to indicate that there is a concentration of contrast material around the lesion. Circumferential enhancement is more common in tumors, infections, intracerebral lesions and other diseases, but circumferential enhancement is not necessarily malignant.
1. Most tumors are malignant when they show ring-shaped enhancement, but meningiomas are usually benign tumors, and cavernous hemangiomas also show ring-shaped enhancement in the arterial phase;
2. Infectious diseases such as liver abscess, encephalitis, brain abscess, etc. will also show enhancement around the lesion on examination;
3. Intracerebral lesions, such as demyelinating disease, multiple sclerosis, and cerebral hemorrhage in the absorptive phase may also show ring-shaped enhancement.
It is recommended to consult a doctor in time after the appearance of the disease, cooperate with the doctor to carry out local imaging tests, confirm the condition and then carry out appropriate treatment under the guidance of the doctor.