70 year old female presents with confusion status post fall.
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Multiplanar imaging from a NECT of the brain demonstrates a round hyperdense mass arising from the third ventricle. No evidence of hydrocephalus.
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A colloid cyst is a rare benign lesion arising within the third ventricle accounting for 0.5-1% of primary brain tumors. Typically, colloid cysts are clinically silent, but when symptomatic patients most often present with chronic headaches. Although a colloid cyst is histologically benign, it can cause obstructive hydrocephalus, herniation, and sudden death.
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- 2. Armao, D., Castillo, M., Chen, H., & L. K. (n.d.). American Journal of Neuroradiology. Retrieved March 20, 2016, from http://www.ajnr.org/content/21/8/1470.full