Lateral Ventricle Solitary Fibrous Tumor: A Case Report and Review of the Literature

Abstract

Solitary fibrous tumors (SFTs) are rare tumors thought to be of mesenchymal origin. Even though intracranial, especially intraventricular, SFTs are rare, this diagnosis should be considered in the differential for intraventricular lesions. Here, report the case of a female in her 60s who underwent a non-contrastenhanced magnetic resonance imaging scan of the brain for new-onset memory issues and headache which revealed a well-circumscribed intraventricular lesion in the right lateral ventricle with vasogenic edema, trapping of the temporal horn, and subfalcine herniation. She was admitted and started on dexamethasone prior to surgical treatment of the tumor. A right-sided superior parietal lobule approach was utilized to reach and resect the lesion. Histopathology was consistent with World Health Organization grade I SFT. Only 10 other cases of lateral ventricular SFTs have been reported in the literature. Intraventricular SFT is a rare diagnosis, and, as such, the literature on this topic mostly consists of case reports. Although the lesion is benign, metastases have been reported, and thus, gross total resection remains the standard of care. This case adds to the paucity of SFTs reported in the literature.

Rare magnetic resonance imaging findings of intracranial solitary fibrous tumor: A case report

“…The term “HPC phenotype” is now regarded as a more malignant phenotype of SFT, often representing grades II and III of SFTs/HPCs, while grade I is more inclined to the term “SFT phenotype,” and clinical behavior is usually benign. [ 4 ] This combined diagnosis greatly reduces the misdiagnosis rate of SFTs and HPCs. [ 3 ]…”