The authors report the first case of a giant supratentorial enterogenous cyst presenting with acute symptomatic hemorrhage within the cyst. We report the case of a 78-year-old Philipino female who was found to have a large right fronto-parietal mass after a minor fall. She had a small amount of hemorrhage within the cyst but was stable for discharge the following day. She was readmitted 5 days later with acute onset severe headache and leftside weakness. On repeat imaging, her cyst had grown in size and had large acute hemorrhage within it. She was taken to the operating room for craniotomy and cyst resection. She recovered well post-operatively. This is the first known case of a giant supratentorial enterogenous cyst presenting with symptomatic enlargement due to large hemorrhage within the cyst. Enterogenous cysts should be considered on the differential diagnosis of hemorrhagic supratentorial giant cysts.
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