Primary central nervous system histiocytic sarcoma: a systematic review of clinical presentations, radiologic findings, treatment strategies, and prognostic outcomes. - Pitchan Velammal, Praveen Nandha Kumar; Dhasakeerthi, Thirumalaivasan; Surendran, Adwaith Krishna; Agrawal, Mansi; Veluswami, Keerthana; Varghese, Jonathan Roy; Veerachamy, Harish Sidharth (Egyptian Journal of Neurology, Psychiatry & Neurosurgery, 2025)