Evaluation of complex cystic masses of the brain: value of steady-state free-precession MR imaging.

Endoscope-assisted microsurgical resection of epidermoid tumors of the cerebellopontine angle

“…Nevertheless, differentiation between arachnoid and epidermoid cysts is still sometimes difficult. On standard T 1 -and T 2 -weighted spin-echo MR images epidermoids can often barely be distinguished from CSF; 13,14,22 therefore, other imaging sequences have been investigated. Fluid-attenuated inversionrecovery imaging, diffusion-weighted imaging, and CISS sequencing have been recommended for the characterization of epidermoid cysts.…”

Supratentorial primary intra-axial tumors in children

“…Identification of the cystichecrotic components is usually not difficult on CT and/or MR with contrast enhancement. In our 2 cases of entirely gelatinous astrocytoma, however, the tumors appeared cystic on both CT and MR. Certain MR methods have recently been reported to be useful for making this distinction, for instance steady-state free precession MR imaging and the measurement of the diffusion coefficient (4,28).…”

Pyruvate: An in vivo marker of cestodal infestation of the human brain on proton MR spectroscopy

“…Furthermore, cysticercal cysts are also observed within ventricles and subarachnoid spaces, assuming racemose‐like extended morphologies (5). It is well recognized that it is not always possible to differentiate these parasitic cysts, single or multiple, from inflammatory, developmental, and neoplastic cystic lesions on routine MRI alone (5–7). This is further aggravated by protean and overlapping clinical manifestations caused by these parasitic disorders.…”