Intracranial solitary fibrous tumor with multiloculated cystic change: A case report.

Intracranial solitary fibrous tumor (SFT) is a mesenchymal neoplasm that typically appears as a solid mass, whereas cases with predominantly cystic change are extremely uncommon. We report a case of intracranial SFT presenting as a cystic lesion. A 67-year-old woman presented with progressive memory impairment and gait instability over a 6-month period. CT and MRI revealed a mass located along the falx cerebri, composed predominantly of cystic components. The patient underwent surgical tumor resection, and histopathological examination confirmed the diagnosis of SFT, CNS WHO grade 2. Postoperative radiotherapy was administered, and no evidence of recurrence was observed during a 2-year follow-up period. Because SFT is an aggressive tumor with a high risk of recurrence and distant metastasis, accurate diagnosis is essential for appropriate treatment planning and postoperative surveillance. Therefore, SFT should be included in the differential diagnosis of intracranial tumors with cystic morphology.