Tehran University of Medical Sciences Iranian Journal of Parasitology 1735-7020 11 3 2016 12 21 422 425 Shahnam BABOLI Neurosurgery Ward, Khanevadeh Military Academic Hospital, AJA University of Medical Sciences, Tehran, Iran Simin BABOLI School of Medical Education Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran Saeed SOLEIMAN MEIGOONI Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran 2016 09 28 2016 09 28 Brain hydatid cyst constitutes one of the leading causes of cranial mass in the endemic region, especially among the children. Symptoms of the disease are associated with rising of intracranial pressure and focal neurological deficit. Surgical excision of the cyst is essential to treatment. Here we present a 19 yr-old male livings in Ardabil, northwest of Iran, referred to Neurosurgery Clinic in Khanevadeh University Hospital, Tehran, Iran with a large brain hydatid cyst and atypical symptoms. He was treated by surgical excision of the cyst without any complication. There were not any clinical or radiological signs of recurrence after one-year follow-up. https://ijpa.tums.ac.ir/index.php/ijpa/article/view/1216 https://ijpa.tums.ac.ir/index.php/ijpa/article/download/1216/724