What are the MRI manifestations of lung cancer brain metastasis? There are several manifestations

The MRI manifestations of brain metastases in patients with lung cancer are usually round or quasi-circular, with edema around the tumor, and the color of the tumor may be white at this time.

Lung cancer patients have brain metastases, which has caused serious damage to their health. So, what are the MRI manifestations of lung cancer brain metastases? Let's take a look below.
When lung cancer metastasizes to the brain, MRI examination usually shows a round or quasi-circular tumor. Enhanced scanning generally shows a ring-shaped enhancement, and the patient has edema around the tumor.
Since contrast agents are paramagnetic substances, they can enter the patient's brain tissue through blood vessels. Usually, contrast agents do not cause abnormal signals in brain tissue through the blood-brain barrier.
If the tumor destroys the human blood-brain barrier, the contrast agent will be able to enter the tumor. At this time, the tumor tissue will often show a high signal, which is the key to clinically distinguishing tumors and some inflammatory demyelinating diseases.
When patients with lung cancer brain metastases receive enhanced MRI, the patient's characteristic manifestations are often more obvious. The tumor often undergoes obvious enhancement and can be observed to appear white.
At the same time, the tumor may also undergo necrosis, which is an imaging feature of lung cancer metastasis to the brain.