Tehran University of Medical Sciences Iranian Journal of Parasitology 1735-7020 12 1 2017 02 27 152 155 Ali BARADAN BAGHERI Dept. of Surgery, Shahid Madani Hospital, Alborz University of Medical Sciences, Karaj, Iran Mohammad ZIBAEI Dept. of Parasitology and Mycology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Mehdi TAYEBI ARASTEH Dept. of Anesthesiology, Shahid Bahonar Hospital, Alborz University of Medical Sciences, Karaj, Iran 2017 02 27 2017 02 27 Although Hydatid disease eradicated in many countries, it is still widespread in communities where agriculture is dominant. Cystic hydatidosis is significant public health problem in the regions with endemic echinococcosis. The hydatid cysts tend to form mostly in the liver or lung. Brain involvement is very rare. In the present report, we describe magnetic resonance imaging findings in an 18-yr-old male with cerebral echinococcosis, in Shahid Madani Hospital, Karaj, Iran in 2015. The patient, presented with headache, hemiparesis, impairment of speech, vomiting, and nausea. Computed tomography, magnetic resonance imaging, and surgical exploration proved a cyst in the superior portion of left temporal lobe. Pathological examination showed it to be a solitary primary cerebral hydatid cyst.  https://ijpa.tums.ac.ir/index.php/ijpa/article/view/1531 https://ijpa.tums.ac.ir/index.php/ijpa/article/download/1531/686