The image illustrates brain tumours of the cerebral hemisphere, brain stem, cerebrum and brain centre. These are common brain tumor locations. The brain stem, located under the cerebrum and in front of the cerebellum, joins our brain to the spinal cord. The brain stem itself controls many bodily functions required for life, such as breathing, heart rate, blood pressure and alertness.
Brain metastases occurs when cancerous cells from the brain start spreading to other parts of the body. Any cancer can spread to the brain, but the types which lead to brain metastases are mainly cancer of lung, breast, colon, kidney and melanoma. Brain metastases, or secondary brain tumors, occur in 10-30% of adults suffering from cancer.
A brain tumor is an abnormal growth of tissue in the brain. A primary brain tumor is a tumor which starts in the brain tissue. If a cancerous tumor starts elsewhere in the body, which spreads cancerous cells in the brain, the type of tumors are known as secondary or metastatic brain tumors.
Brain cancer can cause symptoms of hemorrhagic stroke. The symptoms of a stroke caused by an intracerebral hemorrhage due to cancer or tumor are different from typical stroke symptoms. This is because most strokes happen due to a sudden blockage of blood flow to a region of the brain, which causes stroke symptoms to develop suddenly.
Pituitary adenomas are slow-growing and benign cells. With their growth, they start creating pressure on the nearby structures, such as the nerves that connect the eyes to the brain, and cause various symptoms. About 8 out of 100 (8%) of brain tumours are in the pituitary gland. The pituitary is a small gland found inside the skull just below the brain and above the nasal passages.
The image represents an MRI scan of brain tumor. An MRI scan is used to diagnose a brain tumour. Specialised MRI scans called magnetic resonance angiography (MRA scans) show blood vessels in your brain. Another type of MRI scan, known as functional MRI (fMRI) helps in planning a surgery.