Tehran University of Medical Sciences International Journal of Hematology-Oncology and Stem Cell Research 2008-2207 2 1 2005 03 15 33 35 Mohammad Ali Bitaraf Iran’s Gamma knife center, Iran university of medical sciences, Tehran, Iran Maziar Azar Iran’s Gamma knife center, Iran university of medical sciences, Tehran, Iran Farid Kazemi Iran’s Gamma knife center, Iran university of medical sciences, Tehran, Iran Mazdak Alikhani Iran’s Gamma knife center, Iran university of medical sciences, Tehran, Iran Mahmoud Allahverdi Iran’s Gamma knife center, Iran university of medical sciences, Tehran, Iran Alireza Zahiri Iran’s Gamma knife center, Iran university of medical sciences, Tehran, Iran Soraia Salmanian Iran’s Gamma knife center, Iran university of medical sciences, Tehran, Iran 2015 10 01 A case of cystic craniopharyngioma is presented in which multiple micro-surgeries failed to result in cyst resolution and significant enhancement in patients symptoms. Tumor irradiation using Leksell Gamma knife resulted in complete absorption of the remained cystic parts of the tumor and dramatic improvement in patients symptoms three months after the radiosurgery .Possible mechanisms are dis¬cussed. https://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/view/180 https://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/download/180/173