The scariest disease is the one you don’t even know is there. Such a disease is Meningioma. A meningioma is a type of tumor that develops from the meninges, the membrane that surrounds the brain and spinal cord. In many cases, benign meningiomas grow slowly. This means that depending upon where it is located, a meningioma may reach a relatively large size before it causes symptoms. Dr Karim Ben Hamouda from Neuro Spinal Hospital explains why this is dangerous and how these types of brian tumors can be treated.