TY - JOUR AR - SCR-2019-6-102 TI - Case Report: A Case of Acquired Symptomatic Arachnoid Cyst in an Elderly Patient AU - Daisuke, Shimbo AU - Katsuyuki, Asaoka AU - Kazuki, Uchida AU - Koji, Itamoto AU - Masaaki, Hokari AU - Ryosuke, Sawaya JO - Surgical Case Reports PY - 2019 DA - Wed 27, Nov 2019 SN - 2613-5965 DO - http://dx.doi.org/10.31487/j.SCR.2019.06.02 UR - https://www.sciencerepository.org/case-report-a-case-of-acquired-symptomatic-arachnoid-cyst-in-an-elderly-patient_SCR-2019-6-102 KW - Symptomatic acquired arachnoid cyst, elderly, seizure, microsurgical cyst excision AB - Arachnoid cysts comprise approximately 1% of all intracranial space-occupying lesions and etiologies of its formation are believed to be both congenital and acquired. However, very few cases of symptomatic acquired arachnoid cyst have been reported so far in the elderly. Here we report a case of acquired symptomatic arachnoid cyst in an elderly patient. We present here a case of 75 years-old male presenting with seizure-like episode. He was diagnosed bilateral subdural hygroma and left-sided arachnoid cyst by CT. However, he was performed CT 12 years ago, which showed no arachnoid cyst then. We performed microsurgical cyst excision and fenestration to the subarachnoid space. Postoperatively his condition has been excellent so far, with no cyst recurrence.