Broken ribs can be extremely painful. Often, the pain from a rib fracture is worse when taking a deep breath. Severe broken ribs require evaluation and treatment at a hospital; usually these cause so much pain that a person naturally seeks medical attention. The key to recovery from broken ribs is pain control.
Brain tumors are classified according to histology, but tumor location and extent of spread are important factors that affect treatment and prognosis. Ependymomas arise from ependymal cells that line the ventricles and passageways in the brain and the center of the spinal cord. Ependymal cells produce cerebrospinal fluid (CSF). These tumors are classified as supratentorial or infratentorial. In children, most ependymomas are infratentorial tumors that arise in or around the fourth ventricle. According to the 2016 revision to the World Health Organization (WHO) classification of tumors of the central nervous system, ependymal tumors are classified into the following five main subtypes:
Fourth ventricle. Inside the brain, there are four cavities, called ventricles. The right and left lateral ventricles and the third and fourth ventricles compose the ventricular system. The fourth ventricle contains cerebrospinal fluid. It has a diamond shape and is located in the upper portion of the medulla.uch like other portions of the ventricular system inside the brain, the fourth ventricle develops from the area inside the neural tube (the structure in an embryo that becomes the brain and spinal cord) called the central canal. During gestation, the ventricles form during the first three months of pregnancy.