Related Experiment Video
Updated: Oct 2, 2026

Surgical Treatment of an Endolymphatic Sac Tumor
Published on: May 26, 2023
[Symptomatic subependymoma of the lateral ventricle in a young female]
H Yoshioka1, K Kurisu, K Arita
1Department of Neurosurgery, Hiroshima University Faculty of Medicine.
Abstract:
We present a case of a symptomatic subependymoma (SE) in a young. The patient was a 20-year-old female who suffered from severe headache and vomiting. Precontrast CT scans revealed a large spotty-calcified isodensity mass lesion in the right anterior lateral ventricle, showing scarce contrast enhancement at the center of the mass and with marked hydrocephalus. MRI demonstrated the lesion as slightly hypo-intensity on T1-weighted image, hyper-intensity on T2-weighted image. On FLAIR imaging, the lesion indicated remarkable hyperintensity and was clearly distinguishable from surrounding brain parenchyma and the cerebrospinal fluid. After Gd-DTPA infusion central vein was revealed, but no tumor enhancement was seen. The tumor was totally extirpated through the transcortical approach. Histological diagnosis was SE, and high MIB-1 staining index (9.3%) was seen. FLAIR imaging is useful for the preoperative diagnosis and the postoperative assessment of SEs.
Related Concept Videos
Cerebral Edema ll: Pathophysiology
Encephalitis l: Introduction
Brain Abscess l: Introduction
Viral Meningitis
