PT - JOURNAL ARTICLE AU - E C Bourekas AU - M R Raji AU - K J Dastur AU - G J Francken AU - D J Engle AU - N T Nayak TI - Retroclival arachnoid cyst. DP - 1992 Jan 01 TA - American Journal of Neuroradiology PG - 353--354 VI - 13 IP - 1 4099 - http://www.ajnr.org/content/13/1/353.short 4100 - http://www.ajnr.org/content/13/1/353.full SO - Am. J. Neuroradiol.1992 Jan 01; 13 AB - Retroclival arachnoid cyst is a rare mass lesion, with only seven cases previously reported in literature. MR is the imaging modality of choice in its evaluation and in its differentiation from epidermoid cyst. The case reported here was surgically proved and had an uncharacteristic MR signal intensity that was higher than that of cerebrospinal fluid due to previous hemorrhage.