Several methods exist for diagnosing a patient as having<unk> . Most involve brain scans to look for swelling while some use cisternography to observe obstruction in cerebrospinal fluid (CSF) flow among ventricles. In order to try to investigate the flow dynamics of the cerebrospinal fluid, doctors utilize cisternography, which injects a radiolabeled substance into the CSF via lumbar puncture. The CSF flow is then tracked by taking pictures at incremental times. However, cisternography is declining in use with physicians who are opting to use MRI instead, to assess CSF flow. Cerebrospinal fluid flow is important in diagnosing<unk>  because disturbances in CSF dynamics can be contributed to blockages in the connections between ventricles such as foramen and aqueducts. Such blockages are tell-tale signs that a cyst is present. Also, if CSF cannot flow freely, it will begin to accumulate leading to hydrocephalus. CSF is secreted by choroid plexuses located on the roofs of the ventricles. After travelling through each ventricle, the CSF leaves the fourth ventricle and flows around the brain stem, cerebellum, hemispheres, and finally, down into the subarachnoid space. To complete the cycle, the CSF then moves back up to the basal cisternae to start over. In patients with<unk> , an impairment exists in the ability to reabsorb CSF by the arachnoid granulations leading to an accumulation. Presently, doctors will utilize magnetic resonance imaging to get an image of the afflicted area. If swelling exists in the third ventricle along with cystic lesions, both of which are accompanied by the characteristic<unk>  bobbing, a diagnosis of<unk>  is likely. From here, the doctor will propose the available treatment options listed below. Classification<unk>  does not have a precise classification in the major medical catalogs because of its rarity and complexity. Although it is a movement disorder, it is caused by neuronal obstruction of ventricle communication. Thus, it is grouped with hydrocephalus under the World Health Organization’s International Classification of Diseases (ICD) as G93.0, under ICD-10, and 348, under ICD-9.
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