What is an aneurysmal bone cyst? How does a brain aneurysm occur?

What is an aneurysmal bone cyst? How do brain aneurysms occur?

Aneurysmal bone cyst is a benign single bone tumor characterized by uniform foamy translucent areas in the tumor. This disease often occurs in older children and young adults. The tumor is often located in the epiphyseal end of the long bones and the back of the shaft or spine. It causes local pain and swelling, dysfunction of the affected area, and spinal cord compression symptoms when located in the spine. Local puncture aspirates bloody fluid with high pressure.

Aneurysmal bone cysts are expansile osteolytic lesions composed of blood-filled cavities of varying sizes. The cyst wall is connective tissue containing osteoid tissue, trabeculae, and osteoclast-type giant cells.

How do brain aneurysms occur?

1. Inflammation, no matter what the cause, can weaken the arterial wall. Most arterial inflammation is caused by diseases such as polyarteritis nodosa or bacterial endocarditis.

2. The artery wall has three layers of tissue. The support of the artery is provided by the middle muscle layer, which may be congenitally defective. Normal blood pressure in the affected artery will cause a balloon-like swelling called a saccular cerebral aneurysm. Cerebral aneurysms caused by congenital defects almost always occur in the arteries at the base of the brain. Because of their shape and because several cerebral aneurysms often grow together, they are also called "berry" cerebral aneurysms.

3. The muscle middle layer of part of the artery wall slowly deteriorates due to chronic diseases such as atherosclerosis or high blood pressure. Brain aneurysms caused by atherosclerosis are likely to be sausage-shaped swellings called fusiform brain aneurysms, which will develop along a small section of the artery. Another similar swelling is caused by high blood pressure. Another similar swelling is caused by high blood pressure. However, increased blood pressure in the arteries can cause the artery wall to expand in many different ways. It can even rupture the tissue layer of the artery wall and force blood into the tissue layer. This disease is called a dissecting aneurysm.